Thankyou for your suggestions, Carpet Rodent, but unfortunately no conflictions are evident. After having gone through the file saving exercise quite recently to install 2000Pro, I think I will hang off now until Optus Cable decide to support XP then go to XP Pro.
To get around the file saving problem from the Web, I have to constantly delete the Temporary Internet Files. This is a known problem according to MSDN. Hopefully the OS upgrade (change?) will cure both of my problems.
Cheers.