Uh, you don't need Nero to burn a CD... XP has all the same disc burning capabilities (CD and DVD) that OSX has. Nero is good for some things, just as apps like Toast are good for some things on the Mac, but my advice would be to uninstall the crap software. 😀
I'm a firm believer that 90% of PC problems come from the crappy bloated junkware that system vendors include with their systems. When buying a new PC, the very first thing you should do is wipe the hard drive and install a clean copy of Windows without all the third-party BS. Anti-virus software is a good idea - I recommend AVG from Grisoft. I wouldn't use Norton or Macafee or any of the typical ones. They cost too much money and use too many system resources. Not to mention they typically cause more trouble than they're worth. Ad-Aware from lavasoft is great for managing cookies and spyware. I wisth there was a good app like this for OSX. Not that we really have a spyware problem on the Max, but some better management of tracking cookies and security would be welcome.