My system info of pse 7 tells me that the operating system is vista while I'm working with windows 7. It also shows a place for the catalogfile that don't exists on my computer.
You're on the wrong forum. That aside, PSE 7 comes from a time when Win 7 didn't even exist, so whatever oddities you see are probably normal.
Like Mylenium has mentioned this is not the Photoshop Elements Forum.