Do not run unlicensed software especially Operating Systems.

Yes, of course,

I love the way the illegal copies try to faithfully replicate everything on the original, including 'Do not make illegal copies of this disk'.
A mate installed a erm copy of Win XP only to find it kinda was WinXP but with an entirely new bit of code 'silkroped' into it. Kept reformatting hard drive and reinstalling windows, durr...
Overall, a great idea to
1. Partition your hard drive
2. Put windows only in one bit, all your other stuff in another
3. Use a CD/DVD writer to backup the documents you really need on a monthlyish basis.
If it all goes tits up you can always just reformat one partition and pull what you need from CD DVD and save a million hours trying to 'weed the garden' so to speak.
Oh yeah, and if my antivir results come back positive, especially for trojans, after the cleanup I change all my critical passwords, especially my poker ones. Also I dye my hair and grow a beard in case they have stolen my identity.