|Doubling memory, whether it be NV-RAM, physical RAM, virtual RAM or any other kind of RAM is not going to do anything to speed up a dial-up connection. The speed you get is usually determined by matters outside your control.|
Doubling physical RAM can speed up the overall performance of the computer and with Windows XP, going to 1GB will make a marked difference, but your Internet connection will still be 24kbs.
NV-RAM is fixed by the manufactures and you have just enough to do the job it is meant to do and no more. Adding more wont achieve anything.