Cougs837:
There are many many posts on the 32/64 issue, including at the level of 4 GB RAM.
Nothing has been resolved, just as nothing has been resolved in 80 years of Ford or Chevy. And for the same reason.
You can Google and find page after page about the wonders of 64-bit---none of which may mean the slightest thing in your case.
The "proper" choice is based on a complicated algorithm involving what you do on the PC, what hardware you have, what software you use most frequently, the value you place on your time, your degree of obsessiveness, your inclination to take advice from total strangers on the Internet, how often you upgrade, yada yada yada, ad nauseum.
I think most newly manufactured systems with 4 GB of RAM have 64-bit installed. I suspect that is mostly for purposes of standardization by OEM builders and that the majority of users justifiably could not care less.