As you may know I recently bought BGII + ToB for a good price 8) , and now I want to start a multiplayer game for myself (you know what I mean, just singleplayer but with all chars made by me).
The problem is that I can't start a game. I can select the characters, but the "done" button remains gray, so what am I doing wrong?

Hmm... you sure you've spent all spendable points? For Strength, Weapons, etc.

Where did you buy SoA (which shop)? Think something is wrong with my cd's So I'm thinking of buying it again.

Bought it at V&D.
I've created my characters, but the next screen, with the list of characters you can create can't be completed, even when I've filled all six slots.

Uhm, if you're talking about what i think you are:

Make sure you click on/select the V's on the right of every char. That way the done button will un-grey.

All v's are on, and all slots are filled with a character (btw I remember doing this before with just four partymembers so it shouldn't be a problem.
The modify characters button is also grey which is double weird because I can't select anyone anyway.

Wtf...this is strange...what protocol did you choose? TCP/IP?

I'm an ass. I assumed seeing those V's meant they were on, but it seems to be that you need a V with a yellow line around them.
Logically I would make empty boxes you would tick on but maybe I think too logical for Bioware/Black Isle standards. Or I'm just stupid. 8)

I got it working now anyway.
I moved the folders from mpsave to save, that does the trick does it?

Yeppa, don't forget to restart BG first afterwards tho. And don't be too hard on urself, the V's are idd confusing, i've spent my share of time thinking "what the?" even after a few times.