Windows 98 map drive to windows server 2003

Hey everyone,
I have a shared folder on a windows 2003 server (non domain controler), i set the permissions for a particular user.

When I map this shared folder from a windows xp client it asks for a user name and password, i enter the one thats set in the permissions and it ma ps it correctly.

However when i try to do the same from a windows 98 machine, it asks for a password to connect to the resource, but no username. I tried every password i could think of but no luck.

Any help would be appriciated. Thanks