hmm.. using palm devices..
quite a few solutions, here would be the most effective:
get a copy of Citrix Metaframe XP and put it on a server with a few modems/a modem pool. Have them install the Citrix Client for Windows CE and have them use that to establish a connection with the citrix server, once on the citrix server the rest is cake, they have access to most network resources. - This solution is NOT a cheap solution, citrix is quite an expensive product ($2500 + Licenses) but well worth it.
If this solution seems too big or too complicated let me know and I will post another?
p.s. (wonder if I will get flamed from spidey for helping this person.)