Hello All
I am having trouble of DTC to get working thru firewall

The setup we have is
Two web servers load balanced. Componets run off the web servers. (OS:2000 Server
Two SQL server clusered.(OS: 2000 advanced server)
Web servers and SQL Servers are in different domain separated by firewall
Components do not work if I set "transaction required". If I changed it to "Transaction suported" or "not supported" some componets do work

I tried suggestions from kb article
DTCPing: http://support.microsoft.com/?id=30684
Initially DTCping had some problem but for testing purpose we opened all ports on firewall. It worked

I tried another config suggestion
http://support.microsoft.com/?id=25036

When I apply the registry entries for ports mentioned in this article, it disabled Clustering service. I was not able to get it back until I revert back registry settings

I tried DTCtester utility, it doesn't work

Does any one know why it must be disabling the clustering service? or Have any other suggestions on configuration for DTC thru Firewall

Thank
Mils