>I'm having problems sending SMTP mail using .Net 2.0. Has anyone done this? Note that this has completely changed in 2.0 compared to previous versions.

I haven't done myself and 2.0 is installed on home computer. However I came across this at:
http://msdn.microsoft.com/coding4fun/coolapplications/sysmonitor/default.aspx

Excerpt from page as is:
"
Improved SMTP support
Simple SMTP support in previous versions of the .NET Framework was dismal. IIS was required, as was its SMTP component, which was no picnic to correctly configure. I stumbled upon the new SMTP support recently and it was a wonderful surprise. The snippet below just works. No configuration necessary!



SmtpClient mailClient = new SmtpClient();

mailClient.Host = _host;

mailClient.Send(_to, _from, title, message);

"
Cetin