PCs support the mini-disks for uploading wireless!! How was I to know that Macs can't??
I know a few people that have had the same thing happen.. it's not a mac or pc thing though! It's just that slot-loading disc drives cannot swallow mini-cds
Apple is actually coming up with an adaptor soon (that's the word down the grapevine)
don't beat yourself up too hard... your mate that ordered it should be able to arrange to have it fixed/removed