Yeah, my advice is for people NOT to delete stuff if you don't know what it is. Many programmes now come with sub-programmes to allow them to work.
Due to a lot of program piracy - programmes such as Adobe Photoshop which get downloaded illegally on a daily basis now come with programmes in the CS3 Version - without them you can't run Photoshop anymore, which means if you download illegally, is isn't going to work - at least not without re-programming the whole thing, which is incredibly tedious and time consuming.