OK, I've heard a lot of people talk about making their own items so I thought I'd give it a try but I don't know which files to download. Could you guys help me out please?

Go to the teambg webiste to download the necessary editors. Its pretty easy to get the hang of it.

The files I use:
-Infinity Engine Editor Pro (IEEP) - making items & spells
-Shadowkeeper - viewing and etracting existing i & s
-Winbiff - File extractor
-Infinity Explorer - useful for info on items, dialogs, scripts...

I tried creating an item and it worked except when I tried switching to another weapon in the quick weapon bar, the game would quit.