Yes, Like i said, any PSU should work in your case, unless it was a slimline case which from the picture it doesn't look like so your good and that PSU Would do you good for the next couple years, just when your installing it try to remeber where everything goes and if you dont think you can, just unscrew the orginal PSU and take each connector out 1 by one and each time put the other PSU's connectors in so their should be no problems
P.S Remeber to ground yourself so you dont fry the motherboard