XML Parsing

Hi,
Has anyone done any xml parsing with GUI4CLI?
I have a lot of GUI4CLI apps that use the CLI from MKS (Now PTC) Integrity. The main problem that I have is the huge amount of text parsing that I have to do to retrieve the information that I need. However, there is an undocumented parameter for the CLI commands that results in the command output being generated as xml. If I had an xml parser that I could use in GUI4CLI, this would be a much quicker and safer way of getting the information that I require.
There seem to be a number of xml parser dlls around, but I was hoping that someone already had some experience in using them and could give me some hints or details of any success they have had.
Thanks in advance.
Paul