equivalent vb filedialog feature in testcomplete

The answer to your question is simply that it is what i've been requested to do. In my initial post I shared only part of the request I received. Here is the entire text of the assignment:

"TestComplete has the ability to compare 2 files to see if anything has changed.  Need to create a test case that can compare 2 files and report the changes.  Ideally, when running this you would be able to select the 2 files for comparison and not hard code the file location/name into the test case.  This is NOT something we would add to regression test at the start, but would be a manual run when needed."

I believe the phrase "at the start" is an indication that, later on, we might be adding this functionality to the automation. Initially, we just want to see how it works running it manually and I would rather be able to navigate to the files and click on them rather than having to type in the file paths. Having said that, I will look through the links you provided and then let you know if anything works for my situation. Thanks!