As for the first, whoever wrote the script can tell you how the data should be sent. Microsoft's Internet Explorer 3.0 does not support mailto forms. When you try to submit the information, the new mail message window pops up. Explorer does however support forms sent to a CGI script. This line is very important.
Some mail programs are capable of converting the data without resorting to a separate program.
You may want to try this method first. When you put a mailto form on your page and someone sends you information, you'll notice that it is sent with a default Subject. Save the file.