Virtual Dub is very good
http://virtualdub.sourceforge.net/
It does a good job and has the capability to add audio background files.
Looks a bit daunting at first but is remarkably simple to join avi clips and
add background music or whatever audio.
There is a very comprehensive "how to" website for Virtual Dub at
http://nickyguides.digital-digest.com/join-split-avi.htm
I have tried Pecks Power Join too and don't like it.
Also, this is one of the opening paragraphs on the above site;
"As a word of warning, please do not use AVIChop, Pecks Power Join or AVI
Devil to try and chop an AVI because you are likely to get corrupt files.
The following will describe how to cut and join Divx files, but the same
method will work with any AVI, MJPEG, ASF or popular format that VirtualDub
can open. The exception to this is Mpeg-1 & 2 but I'll explain how to do
that in another article =). This method doesn't require that we re-encode
any file, all we are doing is cutting them."
Have fun with VD
Regards,
Leo R