Shaitans need for help :) Options

[Shaitan]

Hi!

I recently decided to try out the F/M, so now I've done most of the minor quests and I've taken Nalia's keep. That combination between the gem golem and Torgal really took some time, but I prevailed... Anyway as a matter of fact: I don't really have any experience with a F/M or a mage... I rarely take a mage with me at all, but as of IA I really need one hence my newbietroubles...

Now I'm in the middle of the druids groove, and these spiders guarding Belm really puzzle me. Especially the Ghostspider gets me every time. I really could use some hints and tips on how to fight those creeps.

My party is on level 10-12 with an amount of XP around 1,05-1,25 mio. Anomen is the only char. who have reached more than 1,2 mio xp.

My party is this:
Me elf F/M (dual longswords/bastard sword)
Jaheira (dual club/scimitar)
Minsc Berzerker (Twohanded swords & Halbards)
Anomen (Hammer & shield)
Kivan (longbow)
Nalia (shortbow)

With hope for help

Regards Shaitan