DNS issue with Check Point VPN Client

I have check point secure remote client installed on my computer and i use it to connect to a branch office (they use their own database) with a vpn cert issued by them.

I can connect fine with no problems and access their database pages...

however my outlook wont work, or any internal web addresses wont work. for example i use citrix internally and if i type http://citrix1 - it cannot find the page over if it type http://192.168.1.55 (the ip of citrix1) it works... The branch office have asked me to setup their dns suffixes on my network tcp/ip properties for the vpn client... is that has to do with anything?

Outlook usually gets confused on find the DC, and it brings up the username and password prompt.

please help !