Success!

Finally! It works! *doing a happy dance*
Hooked up the new computer to this monitor and it works! Not sure what is going on with the other monitor. What was happening is that it tried to open Windows XP then went to a screen where i had to input the Authorization code for Windows XP. I never saw that screen at all with the other monitor. GRRR.
So, I guess now I will need a new monitor since the extra monitor I have won't work.
Always something...

But, *does happy dance again* the computer works!