PBP3 and MCSP

Today I noticed a "sys" folder sitting in my documents folder. I didn't know why it was there and deleted it. Today when I tried to compile a program with MCSP I basically got no response. When I restored this folder everything compiled as desired. I don't know if this folder has resided in my documents for months without me noticing or if something changed recently. I can't tell if this is a PBP3 thing or MCSP issue, but in my opinion there is no good reason to stick this kind of folder to reside where I want to store stuff to access regularly. Anyone have any idea why this is so or how to change the folder location to somehting less annoying?
Thanks
David

It is annoying, I have about 20 programs that put stuff in the Documents folder with windows 7. You can make it a hidden folder if you have 'show hidden files and folders' turned off. That doesn't get rid of it, but you won't have to look at it.