Oh my, you are absolutely correct. I had our specs totally mixed up!
Apparently the CPU we have is a Paxville DP (http://ark.intel.com/Product.aspx?id=27202).
I will check with the manufacturer to see if we can replace the cpu's with a pair of 7140M's or 7041's but to me the specs for 7041 looks very much like the DP version.
Thanks for your insight!!