Hello, I used a Windows XP Pro SP3.iso from a friend to install windows on Parallels 5. The installation worked fine, I installed Parallels Tools... But when I download something from the internet, ANYTHING, it shows up as a DOSBox on the desktop, and it won't run. Every time I click on it, it will say "xxx.exe is not a valid Win32 application.". I then used the .iso in VMWare Fusion, and it's working perfectly. I can't try it in boot camp (it won't partition my drive). Although, my friend has mounted the .iso to a CD and used it on boot camp, and it worked fine. He then used that windows partition to use it in Parallels and it works. He used the same .iso as me. I don't know where he got it. I didn't get a virus on the Parallels Windows XP, I can't even download anything... Nor have I gone on any malicious sites. Please help!