need help finding out what psu to put in my pc

[hitman24]

hello for christmas i am gewttinga video card this one http://www.newegg.com/Product/Product.asp?Item=N82E16814121031
my pc specs/overview is here http://www.dealtime.com/xPF-Acer-Acer-Aspire-E360-Multimedia-Minitower-Desktop-PC-ASE360UA381M~r-1~CLT-INTR~RFR-www.google.com?convertedToHyphens=true
like i said i dont know much about power supply everytime i link one someone said they wont work in my prebulit any way i really dont want to buy a new mobo. heres a psu i was looking at
http://www.newegg.com/Product/Product.asp?Item=N82E16817153028


my psu said
FSP group INC
model numer FSP300-6otha(1)

AC input 100-127/220-240v-, 7/3.5A, 60/50HZ
DC Output 300w (+3.3v & +5v=130w max)
+3.3v then its a symbol like =and --- underthat 20.0A (org),+5v symbol 26.0A red +12v symbol 8.0A (yel) +12v2 symbol 14.0A yelblack +5vsb symbol 2.0a -12v symbol 0.8A blue

 

[doolittle]

Have you considered a GPU PSU like this Thermaltake W0099RU?

It takes up a 5.25" bay and can be had for a mere $46 w/ free shipping from amazon.com.