Setting multiple values on a DCT from CGI callout

System

I am hoping to create a CGI callout that can set multiple values on the DCT instead of setting just the one. Usually whenever there is a CGI callout such as a calendar it sets the value for a single field. However I wish to run a CGI script that reads a few values in from the DCT and then displays them. Then after these values have been edited, then it should save these to the DCT.

I am having trouble getting the usual FormAPI to work, as I cannot seem to be able to get the script to run in the DCT window. Any ideas?.

If I cannot use FormAPI within the CGI script then how can I get/set the values in the DCT?

Many thanks!