Is it possible to move these programs to the card and still use them with no problems?

They are the larger of the programs on my treo....

Any others suggestions on what to move to the card to save space on the internal memory?

SheetsToGo is another memory consumer-ideas-can it be moved and still work? Another is WordToGo? Also VersaMail-can that be removed or does Agendus piggyback on it?