Before you copy an application to an expansion card, make sure that it is compatible with Palm OS version 5.4 or higher. Some applications do not work with expansion cards and do not allow you to store files in a location that is separate from the application.
Opening applications on an expansion card
After you insert an expansion card in the expansion card slot, you can open any of the applications stored on the expansion card.
1.Insert the expansion card into the expansion card slot. The Applications View automatically appears.
2.Select the icon for the application you want to open.
3.Press Center to open the application.
Copying applications to an expansion card
You can copy applications between your Treo and your expansion card.
1.Go to Applications 
.
2.Open the menus 
.
3.Select Copy on the App menu.
4.Select the Copy To pick list and select the destination: card name or Phone.
5.Select the From pick list and select the location of the application you want to copy: card name or Phone.
6.Highlight the application you want to copy.
7.Select Copy.