Does anyone know that is there a way to intergrated IM Lotus Notes sametime on Blackberry either via Bes or not? Thanks a lot!

sametime everyplace should work.

Check the news forum. There was an article released by RIM about enterprise IM support showing up in the near future.

The IM integration from RIM has been announced, but it is not yet avaialble. The only way to connect it right now is Sametime Everyplace, but there has been no new development on that product in the last couple of years. We are waiting to see what RIM comes up with