DX58SO supports the Core i7 965 Extreme Edition
Yes, you are right, the processor match website only provides newer processor models.
There are some boards supporting your Pentium Extreme Edition 965, however, those boards are no longer under support for Intel technical assistance.
Check this out:
Yes thats what I needed. Thank you Allen. I had looked these up a couple of months ago but could not find them again.
Thanks again for your time and help. God bless you - Fred