32bit apps in window xp vs. . 32bit apps in 64bit window xp

I believe you will find that your 32-bit applications will run more efficiently on 64-bit Windows but will not be able to take full advantage of the 64-bit processing until the software is designed/ported for 64-bit. So you are somewhat between a rock and a hard place until 64-bit applications arrive.

I'm using 32-bit but feel like I'm 64
Ms. Remy Ann David