The same thing happened to me. If it has been opened, you can take it to Staples for store credit. If it has not been opened, either Staples OR Best Buy will let you exchange it (for a limited time...they have the policy b/c of Xmas gifts). At Staples it is worth 29.95 in store credit. At Best Buy, it's 59.95...but MUST be unopened.
HTH!