How to Change 'HostName/port/dataStore' of

I have lot of Mainframe transaction services talking to mainframe thru IMSconnect.But as of now in developement we have harded the host/port/datastore value in the property tab of the IMSConnect.

Kindly let me know how to change these values without using developer, ie. by editing the IMSConnect.xml or server.cnf and restarting the IS before deloying to a new environment.We have to deploy to a testing environment, in that case the host/port/datastore will differ, client’s will install they dont use developer just the IS.

Thanks in Advance
Karthick Babu