possible to slipstream game patches?

[ccl0]

i decided to start playing wow again.. when i went to download the full xpac patch it came out to be almost 1gb!

so that got me thinking if its possible to slipstream the game patch into the game dvd...that would save some future hassle if i ever reformat again.

i've tried searching google, but so far i've not gotten any results. maybe i'm searching with the wrong words or something, but i'm wondering if anyone happens to know how to do this? or could maybe point me in the right direction?

thanks