We have a server running Server 2003 with about 25 clients in our office. Every hour it connects with off site PC's to transfer files. One site has no broadband so it is updated by a RAS connection. Our problem is that when the modem connects, the entire office can't see the server anymore. As soon as it diconnects everything is back to normal. All PC's in the company are using 192.168.1.XXX addresses and 255.255.255.0 subnets. Thanks in advance.