Good card relative to what?
The 9600 GT is listed in the THG Guide of best graphics cards for gaming as the best at the $85 to less than $95 level and then another card takes over - but just getting listed shows it is basically a good card. If you are considering it for non-gaming media center applications then it should work well.
http://www.tomshardware.com/reviews/geforce-310-5970,2491.html
Galaxy is not one of the premium vendors of cards. That said - most cards are engineered pretty much the same and the differences are primarily in what heatsink they have or what other things - cables, games, etc. - are bundled with the system. While not always a reliable indicator, the customer reviews for that card are pretty low.
Instead of spending $92 on that (after rebate and with shipping), why not save $2 and get faster card - the 9800 GT (also on the list in the THG Guide one step above the 9600 GT) from a highly ranked vendor - BFG - my preferred vendor - with a lifetime warranty instead of the 2 year one on the Galaxy:
BFG Tech BFGE98512GTGE GeForce 9800 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card - Retail - $90 AR with free shipping
http://www.newegg.com/Product/Product.aspx?Item=N82E16814143186&cm_re=9800_gt-_-14-143-186-_-Product
Comparison of the 9800 GT and 9600 GT from THG charts (basically you get about 20% faster gaming performance):
http://www.tomshardware.com/charts/gaming-graphics-charts-2009/compare,1195.html?prod%5B2450%5D=on&prod%5B2473%5D=on
If for some reason you want to stay with a 9600 GT card, I would get the XFX one that comes with a lifetime warranty and costs only $5 more - they manufacturer has a better reputation as to quality cards and service than Galaxy:
XFX PVT96GYGF3 GeForce 9600 GT 512MB 256-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card - Retail - $97 with shipping
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150397