TreoSkey enables you to use the Treo Side Keys to Scroll and Select.
TreoSkey maps the following keys in this manner:
Side Volume UP Button -> 5-way UP key
Side Volume DOWN Button -> 5-way DOWN key
Side Button -> 5-way CENTER (Select) key
You can use [Shift] + [Side Button] or [Option] + [Side Button] to enable or disable TreoSkey anywhere on the Treo.