[Users] Reg:Instance messages

[venkid]

hai all,

               i am using X-lite as sip client .i have installed in 
window and am able to send instance messages and presence info is also 
fine with openser In redhat Linux i am trying to send instance messages 
using X-lite , but i am not able send and not able to receive any 
messages . is X-lite linux version  is support for redhat linux  Es 3.0 
or any other sip client is there for redhat  linux Es 3.0


Thanks and Regards
     venkatesh.d