I recommend trying it on another monitor to see if the problem follows. You did not say how your monitor worked b4 the new card. If you swap parts to isolate the problem you can often narrow down the problem area to find a solution. If the same prob shows on another monitor that would indicate not a monitor specific prob.
The same for video card, cables and drivers.
ok well i got a brand new geforce 6800 GT OC and when i turned my computer on my monitor is SOOO BLURRY! it looks like im looking at it without my glasses on all teh words ar e messed up and eveyrthing...yesterday i messed witht he cord in the back of the monitor and noticed when its angled at a certian way the words stop being blurry but then i can see shadows of my mosue cursor,icons and stuff and its onnying...is my monitor going bad should i buy a new one? and my monitor is pretty dark no matter how high brightness is