bigmck said:
I only use Outlook, Excel and Word. If I go 64-bit, should those work OK? What are the advantages of using 64 bit over 32 bit? I don't do any fancy calculations, only surfing.
Those all work fine, as other have remarked.

64 bit allows the use of more RAM. With 32 bit applications, the amount of RAM that can be used by any single application is unchanged (usually 2 or 3GB), but you caould run multiple applications without having them comepting for system memory.

64 bit applications can access more RAM. I don't do video editing, but I imagine that 64 bit would be useful there. 64 bit applications are rarer than 32 bit ones; if you needed one, I expect that you'd already know it.

You might be happy with 2GB of RAM, total. I can't speak for others, but I went for more because it didn't add much to the system price. It also gives me the option to run some 64 bit code at home that I normally use at work.