Well its time to reinstall MW. I was thinking about just downloading it from steam but before I do I wanted to make sure that there were no issues with the steam version and any MW 3rd party utilities like TESTool and MGE etc. Or any mods for that matter.
No, it works fine, just not included. It sounds like you have a disk version so just move your CS folder to your steam directory. Also, I think there is a downloadable copy on TesNexus.