Win2K shared folder through router access issues

There are three machines hooked up to a linksys router that I am trying to replace with a mikrotik. Hooked to the linksys router everything works. Each of the three machines can access the shared folders on each other machine.

Hook up the mikrotik in the place of the linksys and plug in the three machines, only the first machine hooked up can access any of the other shared folders. It doesn’t matter which machine is plugged in first, only the first machine can access the other two through Win2K.

However, in DOS mode I can access all the files on shares from any of the three machines.

Is there something in the mikrotik I must adjust that could be causing the issue stopping Win2k from accessing shares?

Thanks in advance.

are you natting between the machines? Possibly the server machine sees all 3 clients as the same client ip and is getting confused.

Sam