I don't think you can get additional fields in a filter (someone please correct me if I'm wrong).
You can make reports with this info, though. Sometimes it's a little bit of a pain to find the data class you are looking for, but you could make a report with all of the things you want to be shown and create new reports off of that by cloning it.
You can use the query builder and go to the Field tab, which will let you search through a good portion of the data classes. Just start typing a words like logon or IP or whatever, and see what results come up. You'll most likely get a list of matches and from there it's kind of trial and error running the report to see if it gives you what you want.
You can also look at the inventory data classes by going to Settings > All Settings and expand Notification Server > Resource and Data Class Settings > Data Classes > Inventory and from there, look through subfolders to find a class name that may match what you're looking for. You can also try looking around the forums for people who may have already tried to track down a data class that you're looking for.
Sometimes I just hop onto SQL management studio and connect to the Altiris SQL database and try to build out reports that way. If you're into writing SQL queries, I think this is probably the quickest way to wade through the data classes to find the one you want.
I've also had a lot of luck just looking at canned reports in NS 7.0. I just look around in the existing reports for a report that contains the information that I want. Then I clone it so that I can edit it and look at the query to see what data class the information comes from - this is probably one of the easier ways that I know of to track things down if you can find a report w/the info you're looking for.