I'm sure you do this, but . . .
Party
Everyone has their favourites, but you can't go far wrong with:
-------Good---------------Evil
F------Khalid-------------Kagain
F------Kivan--------------Shar-Teel
F/T----Coran--------------Montaron
T------Imoen--------------Imoen/Safana
C------Branwen/Yeslic-----Viconia
M------Dyn/Xan/Imoen------Xzar/Edwin
Armour
If your guys are dying, it's because you're being hit. AC is not related to level, although it is related to available spending money. Designate 1 or 2 front-line fighters and pillage/buy/steal the best armour you can for them (early on this is plate-mail). If they are still getting hit, give them large shields for an extra AC bonus (they can still use bastard swords with shields for 2d4 vs. the 1d10 of 2-handed swords). If they don't have shields, give them bows. If they have shields, give them slings.
Attacking
The rest of the party has bows/slings as well. Unlike BGII, missile weapons are the best in BGI. (I don't even think there's an AC penalty for using missile weapons in melee, but I may be wrong).
When you bump into an enemy, target them with missile weapons and let them close the distance. This has the advantage of damaging them at no risk to yourselves (missile firing monsters are relatively rare) and of not uncovering their 18 buddies, allowing you to defeat in detail. When they get close enough, switch your 1/2 fighters to melee and charge.
If they do have missile weapons, you need to think. Either you can charge them with your fighters whilst your support troops missile away, or you all missile away. Me, I charge. Not just because I'm gung-ho, but also because it forces the enemy to target your low AC fighters (who may also be carry large shields for even more protection), but also because if you close with them they change to melee weapons (reducing the chance of hobgoblin poisoning).
The key advantage you have over the AI is the ability to think. Focus your attacks on one/a few enemies, thus improving the odds. The AI will continually plink away at the invulnerable fighters in your party (assuming they were at the front), which allows the weaker members (mages, thieves) to support from safety. Don't extend the same courtesy

.
Scouting
Use your F/T to scout the map stealthed. This allows you to prepare for your attacks, lure enemies towards your prepared party and avoid any that look too tough.
You can even kill entire parties of gibberlings etc. by targeting the nearest one at extreme range. You'll kill him, rehide and repeat on the others one by one. For single, tough creatures there's always the backstab.
Money
What money? You should have spent it all outfitting your guys

. I tend to hold off buying weaker magic weapons etc. that I'll just have to upgrade, but I do buy the long lasting stuff as soon as I can (the bow in the Feldepost in Beregost would be a good example).
Having said that, I'll buy magic shields/magic weapons for my fighters after a while to give me a chance if I do run into any vampiric wolves.
[This message has been edited by Bromley (edited 08-31-2001).]