No-IP Virtual Machine setup

So I purchased a domain from No-IP.com (say, mydomain.com).

Dynamic IP from ISP
Router IP schema: 192.168.1.XXX 255.255.255.0
VM Workstation IP schema: 192.168.100.XXX 255.255.255.0 (also using NAT)

My Router is 192.168.1.1
My desktop running VM Workstation is 192.168.1.110

I have MS Server 2008 running in VM Workstation as a DC. I have DNS installed on the DC. DNS suffix for the DC is "SVRDC". (ie svrdc.mydomain.com) 192.168.100.10
I have Windows 7 running XAMPP for a web server. The DNS suffix for this is "WWW". (ie www.mydomain.com) 192.168.100.20
I have Windows 7 running an FTP server. The DNS suffix is "FTP" (ie ftp.mydomain.com) 192.168.100.30

From my desktop PC (192.168.1.110), I can ping mydomain.com, www.mydomain.com, ftp.mydomain.com and it gives me the correct Dynamic IP address from my ISP.

From my Virtual Server, I am able to ping my Router (192.168.1.1 or any other site on the Internet)

My question is: How do I get it so that if someone goes to mydomain.com, they end up at WWW.mydomain.com or FTP.mydomain.com