We are not looking for any special control panel.
I do link Plesk
Reseller hosting must be win2003 or win2003 web server.
and the ability for me to setup my ns ips where my clients do not have to
change ns server designation on their domain settings.
I presently use ASPMail.dll and aspjpeg.dll for picture uploads.
I can adapt to other components if necessary.
Honestly I haven't seen a lot of HC Hosts around, even in the offers forum here most are cPanel (which wouldn't suit you since you have been using windows), Plesk, Hsphere, and Helm.
A few Ensim, but I even see Ensim more often than HC.
If you are willing to change control panels you should start looking at your options of control panels to see one that would best suit you and your clients needs.
If you aren't, then your best bet is probably going to be googling and searching here.
"NOTE:" There may be HC Hosts here that advertise and I have just missed it, but it doesn't seem to be that prevelant of a control panel.
Now to add (since you posted again ).
You can check the offers forum here for both Plesk and HC companies. As for the Persits Products you may just have to ask or check sites.
The MSSQL requirement does eliminate the Web Edition of Windows 2003 though for licensing reasons. Most reseller accounts "Should" allow you to designate your own IP Addresses and the nameservers to them, especially on Plesk.