salute!
1st of all read this thread, if you havent already:
http://www.subsim.com/radioroom/showthread.php?t=96026
- i found it very helpful.
as was this thread:
http://www.subsim.com/radioroom/showthread.php?t=132596
- this thread is essential, especially the 1st post and the "how to" links given in it. once youve read these scroll down the list of available files, to the "utilities" section, and download and install JSGME. this software is what you use to enable and disable mods. while youre at it, download and install SH3Commander as well.
i dont use uniform mods myself but, from what ive read, venatore's would be a good place to start, and hes a prolific and well respected modder:
http://www.subsim.com/radioroom/showthread.php?t=103714
if you read through the links above you will find better and more clear advice than i can give you. i found it pretty straightforward, and there are plenty of people around who will help u further if you need it. just remember to read the "home" thread for each mod.
good luck