small home network

I have 4 machines on a small home network 1 runing windows xp 2 running windows 98se and one running windows 95. The win 98 machines and xp machines see each other and thats fine. The 95 machine sees only one of the 98 machines and that is it. doesn’t see the other 98 machine and the xp machine. the xp machine doesn’t see the 95 machine and either does the other 98 machine. Any suggestions