I remember that there has been periodic talk at palm sounds about
pda's having usb host so that you can connect micro br's, flash
drives, hdd, keyboards etc.
I found these on ebay the other day that should be able to achieve
this for people with axims or other hp devices....
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=380127445657&ssPageName=STRK:MEWAX:IT
they're £25 plus 3p+p but I think they where about £150 when they
first came out. I don't think I'd use it enough but thought I'd share
in case anyone's interested.