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Forum Moderators: phranque
I tried dns2go but have had no luck so far.
Your question is a tough one, I can't even decide what search terms I'd use... Unfortunately all I can offer is a welcome, but that's not totally useless, it'll bring your question to the top of the "recent posts" list, and hopefully someone with some useful info will offer it.
Added, I also posted a request for help in the Mod's forum. Maybe one of our resident experts will have an idea or two. Best I can do... ;)
If that is what you mean, then the only way I could see to do it is to host yourdomain.com somewhere where port 80 is used and redirect to yourdomain.com:http-port
Port request is a function of the browser/os, not of dns. It is up to the os/browser combo to decide what is HTTP. After it connects, you can do stuff with it, but not until.