I have all the BG games (BG, TotSC, BG2, ToB) and I'm wanting to set up the Trilogy mod, with the Big Picture (and anything else that's compatible that can be recommended

I tried to do this a couple of months ago (using instructions from this site) and ended up wasting the best part of a day with all the downloads only to find that it didn't work in the end.
I'm sure this is down to error on my part, so I am begging for advice on what downloads I need and what I need to do to install them properly. I'm going to be starting from fresh, nothing at all installed already, not even the games.
I have a Windows XP system that is more than capable of running demanding mods and can supply more specs if needed.
Please help me out folks. I loved these games first time around and I really want to do them justice on a marathon run through with the best of the mods out there. I'm sure it could be worth a few all-night gaming sessions if I can just get it working.
EDIT: I should have mentioned, all my discs are from the original UK CD releases. Not the compilation pack.
Edited by Bahnmor, 09 April 2007 - 09:07 AM.