Many thanks for your prompt response and the good advice regarding back-up for my LW files.
My main concern was regarding Java software which LW uses [I think] and which Microsoft informed me, "was incompatible with Windows XP."
It's really too technical for me to understand but the fact that it's not been mentioned, would indicate that it's not an issue, so I won't worry.
I should also mention that because I already have LimeWire installed on my system, it would automatically be accepted by the XP Firewall when THAT is installed. Right?

Thanks again for your help!

Ron