I have an old laptop running a Pentium D I believe. I am fairly sure it is all working fine, it was the mainboard that died rather than the CPU. If you are interested drop me a PM and I will check it all out for you.
=EDIT=
I just saw your post in OT, I guess you already got the CPU sorted
Don't need one now,Spotted a CORE 2 DUO T5750 on Ebay for £5.88 inc so snapped that up,Should be much better than the single core Celeron 575 in there now.