What seems to be yet another problem with P4S8X

Hi guys...
Just bought the Asus GeForce 6600LE 128mB and just cant seem to figure out whats wrong. It never produces a feed for the monitor....??
My motherboard is the Asus P4S8X AGPx8, and it functions fine with my old Geforce TI4600. ( i also tried with the 256mB version of the same card, but no luck. So the card isnt broken).
Any ideas? same issues?
As a semi-newbie in technical issues i just thought that AGPx8 graphic cards would automatically work with any AGPx8 MoBO's
 
what PSU do you have? and does the 6600Le reqquire a molex connector for power from the PSU?
 
My system:
Asus P4S8X AGPx8 MoBo
Intel P4 2.4MHz
1 giga DDR - 2 sticks
1 80Gb HDD
1 40Gb HDD
360W Chieftec PSU
1 CD Burn
1 DVD RW
1 Front Fan Control
 
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