As an iPhone user who works on Windows servers daily, I decided to purchase the WinAdmin
application ($11.99) which promised to provide remote desktop connectivity from my iPhone to supported Windows operating systems (XP, Vista, 2003, 2008). So far the app has worked as advertised. I have a list of servers with all the necessary login information saved (name, IP address, username, password, screen resolution) so that I simply have to launch WinAdmin and touch a server name to be connected to a remote desktop session on the server.
Navigating the remote desktop screen simply requires a finger drag. To click, tap your finger once or twice (for single or double of course). To right-click, tap your finger, then tap again and hold. WinAdmin supports connecting to the console session, and it supports sending Ctrl+Alt+Delete.
I have tested all of the connection methods: internal WiFi, external WiFi with VPN, 3G with VPN, and Edge with VPN. All of the connections worked fine, but as expected connecting to our Cisco VPN over Edge caused a bit of latency in the RDP session in WinAdmin. However, the latency was not enough to make the program unusable by any means. Now I'm able to sit in traffic and reset Active Directory passwords, or drink coffee at Panera Bread while I add a printer to our print server.