how can i have patch 3.03 up and play scape?

Yo guys ive been fuckin wonderin cause its pissing me off; is there a way to play 2.43 and 3.03 at the same time? if there is plz post cause its kicking the shit outta me.

yes I did this once keep the original wow in C/program files or where ever else you keep it
and make a dupe of wow and place it somewhere other than the original and it should work
I tried this so I can confirm it works this way.

(i screwed up the first time I did this because I placed both wow and dupe in C/program files
and had to do a fresh install and re patch up so make sure you put the dupe somewhere else}