have a look here:
INON MRS Olympus 50 Port (without MRS Control Ring)
Inon MRS Olympus 50 Port (with MRS Control Ring) [ino.456212143340] - $440.00 : Reef Photo & Video!, The Underwater Photo Pros
olympus 50mm macro
Amazon.com: Olympus 50mm f/2.0 Telephoto Macro ED Lens for E1, E300 & E500 Digital SLR Cameras: Camera & Photo
you need a mmf-1 adapter but i think they dont sale it enymore, i dont know if the mmf-2 works
and to conect the port to the housing you need a special adapter from
FANTIC: News you have to call and talk to them
hope i coulde help you
i think for everithin i paid about 1200 bugs
thks for that info dude...will upgrade my E-PL1 soon. cheers. great shots....