Return duct fan

I have a pretty big bedroom which is 18'x19' and my AC unit is on the other side of the house, now I can feel cold air coming out though the vent but my room remains hot. The reason it's hot is I have my LCD TV, 2 computers, and a monitor. I did have a return duct in the bedroom and I was wondering if I placed the fan in front of the vent to try to exhaust out some of the heat? Although I'm running a couple of fans but here in Texas is still gets pretty hot in the bedroom.

Any ideas, do I need another return duct? Submit submit

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