MS CRM 3.0 on Windows 2003 R2 x64

Well I was planning on install CRM 3.0 tonight for a client that was until I started receiving errors about IIS 5 or greater not being install on the server. Checked and sure enough it was install on the server and functioning. After some more attempts and then researching the issue found out that CRM 3.0 will not install on x64 OS. So much for install CRM 3.0 tonight, planning on installing x86 OS tomorrow and trying again.