Accessing Network drive

[slowjoep]

When I want to access a network drive (connected trough a router) I'm asked to enter a userID and a Password. However I don't have a userID and password installed when I placed/installed the network drive. Even with all the firewall options disabled I still get asked for the ID en password.

Is there someone on this forum who could help me on the way to solve this problem?

Router is a Sitecom 150N router type: WL-340
Network drive a Freecom 250 GB drive.