Whatever router you use:

we found the most problem free approach is to use VNC to look at the screen of your hardwired physician's office desktop from your laptop/tablet in the exam room. With this even if the router drops the connection, your desktop is still logged into AC with the chart open; so you could just login to your office desktop. So basically you will be using your tablet/laptop as a viewing station rather than logging into AC. This would be just like logging in from your home to your office work computer and seeing office screen. (hopefully this is not all too confusing).

You will have to turn firewall off in the office workstation for this to work.

http://www.realvnc.com/cgi-bin/download.cgi