I recently ordered parts to build a computer. I was not thinking of mining at the time but now i am thinking about doing so. My question is how do i figure out the hash rate i can expect out of my new GPU. If it's low and crappy, i'l sell it online and order a better one before i ever even open it. If it's decent though, i may just buy a second one because it wasnt that pricey.

This is what i ordered: EVGA GeForce 9500 GT 01G-P3-N959-TR Video Card
(newegg.com listing: http://www.dpbolvw.net/click-3621681-10440897?url=http%3A%2F%2Fwww.newegg.com%2FProduct%2FProduct.aspx%3FItem%3DN82E16814130395%26nm_mc%3DAFC-C8Junction%26cm_mmc%3DAFC-C8Junction-_-Video%2BCards-_-EVGA-_-14130395&cjsku=N82E16814130395 )

How can i figure out what ill get from this?

It's low and crappy. You certainly won't pay for the card in any reasonable amount of time. Better to send it back to Newegg and buy $70 of bitcoins.