If memory serves, there WAS a FFV Helpline.. dunno where it went, I for one didnt delete it... anyway, i know excatly where you are up to and i know excatly how to help you mate.. read the following carefully;
You need to get the Adamantium from the Tycoon Meteorite in order to give the Airship the ability to fly at a Higher altitude.. Now once inside proceed to the Meteor and Galuf will remember a switch that sets off the door to inside the Meteor. Also inside you will see a portal but it doesn't work for some strange reason, but the adamantium is in the back so pick it up and leave. Then as the party tries to leave they notice that something is wrong!
BOSS BATTLE: Adamant T.
HP: 2000
ITEM: Turtleshell
This battle will be extremely tough, he will attack with several powerful attacks that cause near 450 HP of damage and its more than enough to knock out a character and he will often use this attack two times in a row as well. Your physical and magic attacks do little on him, but ICE seems to be his weakness. Blast him with ICE2 or Shiva, it will take a couple of rounds but he should be gone by then.
After the battle, head back to Cid and Mid.
Now that the party has handed Cid and Mid the adamant, and they tell the party to go and rest. During the middle of the night Cid and Mid works overtime to get the ship re-modified before morning. Also Butz has a dream in the middle of the night that the ship was finished, and apparently it was! The party can make their way to the Lonka ruins, but there is a problem. It seems that the fortress is protected by cannons and they need to be destroyed before anyone can enter the fortress. But the party doesn't care, so the party leaves for the ruins.
NOTE: You might want to start from the town of Lix. Go to the spot where you can land your ship and increase altitude. This way after each time you defeat the cannons you can rest up your injuries for free at the Inn of Lix! Also to land your ship from the high altitude simply move your airship north and around the Lonka ruins.
Now that you have your modified airship you can soar higher than ever before. To accomplish this simply land your ship over grassy terrain but before you land, there are two arrows, push up and the arrow will flash up, then hit the "A" button or whatever button you might have set on either your PSX controller or SNES controller. Now that you are above everything else try not to lose your lunch by looking down! Here to the sides of the fortress are cannons, to start the battle simply have your airship touch the cannons. I will start with battles tips against the cannons to the far right.
BOSS BATTLE: Flamegun(2)
HP: 2400(each)
ITEM: SPEED POTION(2)
Okay, this battle will be mighty tough. Have your Knights or Monks attack regularly along with the thief. If you had learned Deathclaw from Ironclaw during your escape from Castle Karnak then use it on the cannons and then finish them off. Its that easy. But if you didn't, use all your powerful magic attacks like Ifrit or Shiva or Ice2 or Bolt2. Also the CORAL sword does massive damage against the cannons, about 540 HP of damage to each cannon so you might want to buy some first if you had not already done so. What you can do for the battle however is have four Black Wizards and keep casting Bolt2 because these cannons have a weakness of Lightning attacks. Each cast causes about 600 HP of damage to each cannon and can make for a quick battle.
Afterwards go for the cannons to the left of the Flameguns. Also note that if you were damaged serverely, head back down and heal yourself.
BOSS BATTLE: Rocket(2)
HP: 2500
ITEM: PROTECT POTION(2)
This battle is just like the one above except its a bit harder. They have a Missle attack that cuts down your HP in half and also confuses your party member. But if you have four Black Wizards and Bolt2 you should easily win as its basically the same strategy as above.
Now that you have defeated the cannons on the right, do the same to the cannons on the left. Also go back to the town of Lix each time to heal your wounds. Then, after you have defeated the other cannons on the left the party notices something. It appears that a giant cannon has come from the center of the palace! Now, take the time to prepare yourself because this next battle is your toughest on yet. Then check the cannon to initiate the fight.
BOSS BATTLE: Sol Cannon & Launcher(2)
HP: 9300(Sol Cannon) 800(Launcher)
This battle will be tough. The HPs are only an estimate as my PEEP command did not work on the Sol Cannon or Launcher. First take out the Launchers in the back, the launchers have high magic defense but little HP so it should make up for it. Then concentrate all of your Thunder attacks on the Sol Cannon and have the Knight, Thief or Ninja or Monk attack regularly. If you have the BOTHHAND ability from the Ninja, combine it with the Knight class and equip the CORAL sword(NOTE: do this before battle!) and now your attacks will cause about 1000 HP of damage to the Sol Cannon! Also I suggest that you have at least one White Wizard so that you can keep your party's HP up. And if you have ESNA you can cure the Aging status, if you don't then your in a bit of some trouble. Also once the Launchers are out of the way the Sol Cannon will give you several opportunities to attack, but that means it preparing for its super weapon that causes around 140-200 HP of damage to every character and it quickly depletes your party's HP afterwards. So have a CURE2 spell ready to counter at all times and keep the party's HP around 240. When you win the battle you will recieve a DrkMatter and two HIPOTIONs.
Now that the cannon has been defeated, its time to go in!
Better?
EDIT: Maybe i should sticky this eh? lol