i recently upgraded my e machines mother board to a dual procsseor and wanted to see if both were working so downloaded pc wizard 2008 it says that only one is working can anyone help:)
Welcome to hardwareforums jrdigs 
bring up task manager and go to the performance chart, does it show one or two graphs for your CPU? if it shows 2 with activity on both then your fine, but, i believe windows configures itself to work with how many processors you have when your installing it so you might have to re-install windows to get both cores working.
When you have done that you might also take a look at (free) SpeedFan - Access temperature sensor in your computer
It has two bars showing processor use (or 4 I’m guessing if you had a quad core) but also shows you all your temperatures, quite a niftly little lightweight app.
What operating system are you using?