The “notes” field of the Owner Information is permanantly kept in the memory, those words are always present somewhere on the PPC. This is the only requirement for the dictionary to pick up on words.
Make a note called “Custom Dictionary” (Although the name doesnt matter). I then typed out the words I wanted, and I typed them out multiple times like this:
Vinod
Vinod
Ponmanadiyil
Ponmanadiyil
Bangalore
Bangalore
BEA Systems
BEA Systems
Every time I went to type the word for the second time, it suggested it. As long as you keep this note on your PPC (Main memory or storage card, just dont delete it) then the custom words will remain. They will work for input in any text box, not just when writing notes.