I had a copy of Nero 7 which I got from a market stall - Never again! I found that there was some kind of conflict with Windows Media Player, so I uninstalled it and installed and OEM copy of Nero 6 that I also got really cheap. Now I can't use Nero at all. On top of this, I can't import any files to Windows Movie Maker that I shot with my brand new HD Handycam. I get the same error message as when trying to use Nero "Fatal Error: Installation Corrupted - Please Reinstall Nero". I've tried re-insllaing and I've also tried the registry checking tool that is on the Ahead web page, but still get the same message. I'm scared to try the clean-up tools in case I jigger the PC altogether. I'm also scared to death of messing about with the registry, because I don't know much about it. I've heard all sorts of horror stories form colleagues. Anybody got any bright ideas? PC - Athlon 1600, 512 Mb RAM, Windows XP.