I slept for 5 mins, and then had a smoke. Feel OK now. I might regress soon though.
Um.. no.
Check if your radio version is compatible first. It should be one of these:
1.00.03.04.06
2.05.00.06.11
2.07.00.07.16
2.15.00.07.28
2.15.00.09.01
Refer to this page for any issues btw.
http://unrevoked.com/rootwiki/doku.php/public/unrevoked3
Also, if you're on Windows, you'll need to download and install teh HBOOT drivers:
http://unrevoked.com/rootwiki/doku.php/public/windows_hboot_driver_install
Once you install the drivers, Unrevoked should recognize your phone.