DVI-D Dual link and DVI-D Single link

I have here a FPD2185W Gateway 21" monitor that will not connect to my mac via the MBP's DVI port. I sent in the Mac for repair and it was sent back saying "everything is A-OK". Now my question is, are the cables that i am using effecting the functionality because i know the monitor works on a PC via DVI, but not the mac. The Cable im using now is a DVI-D Dual Link cable. would it be wise to try the Single link cable? I am pretty sure i have tried everything, and am desperate to get a DVI signal going to my monitor instead of the VGA.
-thanks, grant

Do a Google search on "FPD2185W Mac" and you'll see quite a few problem reports. It seems like the Gateway display is the problem and just won't work properly with some Macs.

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