blackhawk

Has anyone ever dealt with an issue where a certain computer on the network can be seen, communicates properly on the network with NO problem BUT can't connect to the internet?

I can ping every single pc FROM the problem unit and can ping TO IT. BUT It can't ping to i.e. yahoo.com or any other site outside the network either.

The problem pc is running Win XP Home. There were no changes made to the system and things were working fine earlier today actually. All of a sudden we just went to check out a different site and lost the internet.