Official TOEE is buggy as hell.
And the last released patch (Patch 3) actually makes it WORSE.
Insert fanmodders "Circle of 8" (Co8). They take the last good patch (Patch 2), and then fanpatch to kill all the nasty crashy bugs.http://www.co8.org/forum/showthread.php?t=1819
Then they add something like 30% more content to the game, including extra unique items, quests, NPCs, scripted encounters and even an entirely new adventure area with monsters (including rendered sprites!) that weren't even in the original. It also adds various options like changing the level cap, or a "shopping mode" where you start out naked (no clothes even!) but with money and a few merchants to equip yourself (vs the default of standard starting gear and no money)
I had no stability issues running under XP, using a no-cd bypass, thanks to Co8.
The graphics are lovely, the amount of gameplay staggering, and the adherence to 3.5 rules was exceptional - it even has usable crafting feats!
Highly recommended AAAAA++++++++, may have to start playing again now that I've mentioned it.