Since I found your original post whilest searching through the othe
ones, I'll take a second to reply.

There is no such thing as "marrying" a computer and monitor together.
I could take 100 different monitors, plug them into an analog port on m
graphics card and each one would work without any type of "setup
process.  Likewise, I could so the same for 100 different computers wit
1 screen.

Your problem is probably the resolution that your computer is set t
display, meaning the resolution that your computer was previously set t
is too high to be displayed on your current monitor.  If you have th
old monitor, hook it back up, lower the resolution a few notches and tr
again.  Try to set it to something like 800x600 or 1024x768 since thos
are resolutions that pretty much any monitor can display.

As I said in my reply to your 2nd post... try using a more descriptiv
subject.  Even something along the lines of "monitor settings" woul
have been much better