Playin games with it

Ok, sorry if this isn't the correct forum to post this, but it is after all, a hard drive. I am having problems downloading all the BS patches for the original WOW game, so I went out and bought a Seagate Free Agent Go 160 GB external HDD. I want to put the game on it, take it to school and download all the patches onto it, bring it home and play with my own computer. Will this work, I dont care to use all the "FREE AGENT" stuff on the HDD, I just want to use it to transfer the game info. Again, sorry if this is the wrong forum. Thanks.
Gary


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