Thanks for your response.
I went through all the unplugging as suggested but it is still pouring sheet after sheet through; it stops half way through with Paper Jam message so I press OK, knowing there is no jam and it then sends another sheet through with the same result.
Look forward to hearing from you.
It is a Microsoft Indows XP, Home Edition, Version 2002, Service Pack 3.
All I could find after that is: Dell Dimension DIM3000, Intel (R), Celeron (R), CPU 2.66GHz, 2.66 GHZ, 768 MB of RAM. I couldn't see anything about System type in the window other than that with no mention of bits.
Hope this helps.