I have a third party company maintaining a static VPN from one main location to two other offices. there is a 2000 or a 2003 box at each location but there is only one database server at the central location. there are point of sale systems at each location and they all need to connect to the one database server. it would appear that HQ has a pdc and a file server and a stand alone database server. the file server is trusted by the pdc. the pdc at HQ seems aware of the pdc at location A but it' is grey'd out and claims it can't connect to it. The pdc at HQ is not aware of the pdc at location B. never the less, the workstations at all three sites have been connecting to a share on all three servers until tonight. Now the workstations at location B are still working and none of the ones at location A can open a share on the pdc at HQ or the stand alone server at HQ. They can all ping each other as if they were on the same network. HQ is 192.168.0.xxx. location A is 192.168.10.xxx and location B is 192.168.20.xxx. A connects through vpn to HQ and B connects through vpn to HQ but A and B are not connected to each other.