QUOTE(Gez @ Apr 30 2008, 03:33 AM)

I could easily have four installs just with the "one modding, one playing" approach.

....
Same kind of considerations here.
I currently have five (still being set up with different mods and props to OldeCow69) and this tip is therefore very useful, especially when you think about all the duplication involved in backing-up as well. They are:
- MW 1 - Mage - with Mephisto's Cap Remover and Ald Vendras, some other landmasses
- MW 2 - Freebooter - probably GCD and lottsa dungeons, some different landmasses that would conflict
- MW 3 - Expanded - for MWE, MWSE etc and yet more different mods
- MW 4 - WIP - for customizing, merging and generally fiddling around with mods
without messing up a gaming install
- MW 5 - Test - a clean installation for testing stuff fiddled with in MW4 or looking at mods that might warrant checking before putting them into a game install
This thread explains some other folks' reasons for having more than one or two installations -
Multiple Morrowind Installations -, how do you do it? And why?