Network computers dont show up anymore

[Greg]

I am currently running Ubuntu 5.10, and the other day I was playing around with the network settings. Now, when I click on Network Places it says that I must log in to access my own computer. When I try to my password doesnt work, and if I hit cancel then the computers dont show up. I tried putting everything back to exactly the way it was, but it still doesnt work. How would I correct this?

Thanks,
~Greg