The 4MB kipper upgrade looks tempting. I wonder if my HDD would be in the way though.
Yes, with the Kipper2k 4MB memory expansion for the A600 the HDD cradle and upper RF shield both need to be removed. Most people like to use CF cards so that's no problem anyway. Me on the other hand, I secured my hard disk with just two screws directly onto the two RF shield tabs (there's two tabs towards the back left of the A600...part of the lower shield).
Then I'd recommend getting a PCMCIA wireless card or a CF adapter to solve your file transfer issue.