Hi, Biggles. I don't speak it either, but I get many, many scripts from here. I have found that sometimes I will try several before I get one to work properly.

I haven't used a form that handles attatchments, so I don't have a good one I've tried, but the one called aMAILzing here at www.hotscripts.com looks good.

It is a primary place I look for scripts - they are rated and I like that.

This script looks straightforward, by the description.

Yes, the site has good support and explanations, and the download has a demo as well:
http://scripts.inexistent.org/amailzing/index.php