I'm selling my 24" iMac which originally came with Leopard, but I have since upgraded to Lion. I'm trying to do a restore before transferring ownership, but it's asking me to provide the password to the app store account used to purchase Lion. I don't want to use my password because if a restore needs to be done in the future, I don't want to give out my password, but also, $30 was spent to put Lion on this iMac, and I should be able to keep it on there for the person who buys it from. Any ideas what my options are here to keep Lion on the iMac without having to give out my password to the person who bought it? I appreciate any help!