A question about 360Follow

Hey guys I am looking for some advice here. I just recently bought a copy of a used phantasy star universe from my local gamestop. Took it home played it that night and then went to download the free expansion. Once I checked for the free expansion on the market place I noticed that the game was also on the market place just 3 dollars more then what I paid for it in gamestop. The next day I woke up to the disc not being read-able after a few open closes it worked again. I installed it to my hard-drive to save on load times especially since i plan on going online soon. However the problems with the disc kept coming to surface and I ultimately returned the game today and downloaded the market place version.

My question is, can I delete the installed version of psu without effecting my newly bought game off the market place or the save files from the play throughs I did while using the disc?

Edit: Used a period instead of a question mark for my question. Le failed~


Edited, May 3rd 2011 10:11pm by Laxedrane

Thanks, I didn't want to delete it and hate myself afterward. Another quick question. Is there a way to take screen shots or video on the 360 and shoot it to my pc without using an external device?