Windows XP or NT 2000, on it? I doubt you'ld be able to get a client (e.g., Armory, Multibit, electrum, etc.) to work on it due to hardware constraints. Maybe electrum? A lot of work to get it to work even if it could.
You could use its web browser (loading a page off of a flash memory storage medium perhaps?)
- The html from http://www.BitAddress.org
could then be loaded and used to create paper wallets.
I'm not sure how you'ld print from it though.
For transactions, the offline mode of My Wallet from Blockchain.info will let you create a spend transaction. Keeping it entirely offline though it won't have any inputs with a balance that could be used for spending.