Error in SSH

[undefinition]

I used ssh in Window 2000 pro to connect to RH 9 .( in my Lan)
With : Host name : 192.168.0.55
User name : bach "My redhat 9 user"
Port : 22
Authentication method : Password
And i have a error message :
"The host '192.168.0.55' is unreachable
the host may be down , or there may be a problem with the network connection
Sometimes such problems can alse be caused by a misconfigured firewall"

What can i do to solve my problem ?
Thanks

[Puckdropper]

Can you access the host itself by other means?

[alc6379]

Yeah, try typing ping 192.168.0.55

[undefinition]

I had a ping command and it was through .
So i still have this error .I tried to use "Putty" but don't have a connection.
Please tell me the solution

[Puckdropper]

Do you have PuTTY set up properly? (Does it work with the same settings on another computer?)

There are added options for things like authentication that you may have to adjust.