ping in one way

If I ping to 192.168.0.2 (win98) from 192.168.0.10 (winxp) I recived “timeout”. But if ping from win98 to winxp, is ok.

I have a local network, with 4 workstatios:
192.168.0.2 (win98)
192.168.0.5 (winxp)
192.168.0.11 (winxp)
and
192.168.0.10 with another card 192.168.0.50 becouse I have a Hub to internet access.

I have zone alarm in 192.168.0.10, but if I shutdown it, the problem continue.

I need help, plase.

3 Xp and 1 Win98, all work fine, but the ping with 192.168.0.10