Is there any way to have a multisig wallet? Or to access the same wallet from two different computers?
No multisig wallets available.
Using the same wallet in two machines is supported starting on version 1.3 of the Client. If you are just using the wallet to send and receive coins it will be ok, but if you plan to host or rent file storage it could be still problematic, specially for hosting.
For the moment I had in mind that just for keeping my coins
