Im trying to find a way to download Lion for my sister. She has an iMac but only a dongle for internet. I gift carded her £25 which shows in her App Store account, and have signed in with her details. But because I already have Lion installed on my Macbook Pro it wont let me be charged and redownload it. Anyone know a way to do it? I know I can probably get away with using the Lion I downloaded for my own macbook, but I want it to be done legit, and in her name.