Audiovox PPC-6600 / PPC-6601 / XV6600 (HTC Harrier)

I just had a customer come in and wanted to know if this data device had an expandable memory..

I told him the specs adn they wern't enough he said he needed something that was about 250 MB.

so can he add to this device ordo oyu know any other device that might work for him??