Hi,

It's as simple as downloading a Flash editor and putting the two together. There are quite a few free Flash editors available for Windows: Flash Editor is one of the first I found via Google. I'm sure there are many others as well

I use Macromedia Flash 8 Professional, but that is a commercial app.

You could also try a 'cat file1.swf file2.swf > final.swf' on Linux (or on Windows with unxutils), but I'm not guaranteeing that that will work

Cheers,

-jk