[rule=7]Ahem.[/rule]
Just upgrade. It'll take a little while, but you'll need 3.5SP1 for v4.0 anyway.
No can do. Corporate environment. And also I uninstalled 3.5 because it was screwing up my Vs.Net 2005 build process (I was using Mono's System.Core and VS.Net with Net3.5 wasn't happy about it).
So - again, where can I get a previous build from?