Virtual dub does work--but it is relatively complex and not entirely intuitive.
Windows Movie Maker can do it.
Both Machete and Machete Lite can do it.
Virtual Dub, Windows Movie Maker, and Machete Lite are free. Machete costs I think $30?
Virtual Dub, Machete, and Machete Lite have an advantage: by default or with an internal setting, they do NOT re-encode the material. This gives you the best possible pic quality. I'm pretty sure Windows Movie Maker DOES re-encode and at times the loss in pic quality will be noticeable.
My vote: Machete Lite. Easy to use, nothing fancy and you don't need anything fancy.
Works like this:
Load the file
Mark the beginning and end point of the first part you want to cut out. Delete it.
Move to second part you want to cut out. Mark beginning and end points. Delete it.
Then resave the file. Very fast and uncluttered.
Avidemux will work also. More intuitive than Virtual Dub, not as intuitive as Machete Lite. Not sure if it re-encodes.