Fusion 2.0.5 upgrade link

I have Fusion 1.1 but due to a hard drive failure on my Mac, I have needed to re-install everything - but have upgraded from OSX 10.5  to 10.6.8.

Now I am unable to install my Windows XP disc. I read somewhere that Fusion 1.1 doesnt support 10.6.8 but there was a free upgrade to Fusion 2.0.5 but I can't find a download for it anywhere.

Any ideas?

thanks

Mark