The short and sweet outcome to Ars Technica’s experiment is that you should stick with 32-bit if you plan on installing the Windows 7 Beta to your MacBook.  The 64-bit version will leave you with little to no driver support and a very crash happy Mac.  The 32-bit version will be up and running with only a minimum of extra work and Ars ended with a Windows Experience Score of 4.4, to give you an idea how well it finally ran. If you don’t want to do a full conversion from OSX, you can set up a virtual machine as that works as well.

“Now that we all have our beta copies of Windows 7 to play with, Ars thought it was time to take Vista’s successor for a spin on the Apple side of the street. After all, it isn’t every day that recent switchers and established users get to (legitimately) try out a copy of Windows for free, so we burned a couple of ISOs and got to work.

We covered all the major bases for our experiment, and just to keep things interesting, we worked on a unibody MacBook with those multi-touch trackpads that don’t even play well with Vista yet. We installed both 32-bit and 64-bit versions of Windows 7 natively in Boot Camp, then moved on to virtualization with VMware Fusion 2 and Parallels Desktop 4 just for good measure.”

Here is some more Tech News from around the web:

Tech Talk