No, since you're running a 32-bit OS, you'd pretty much waste that extra 1GB of RAM, so there's no point spending the money on it.
Presently in my laptop I have a 2GB PC2-6400 and 1GB PC2-5300 ram modules. My OS in 32 bit...
I am wondering if I would get more performance replacing the 1GB PC2-5300 with a *2*GB PC2-5300.
What are your thoughts?