I am still having trouble getting my monitor to work at any descent resolution with the Pi despite Dom and co's best efforts so I decided to setup VNC to remote desktop into it.
I have long been a fan of TightVNC so I decided to use that, for those interested here is what I did.
Log in to your Pi and install the Tight VNC Package
$ sudo apt-get install tightvncserver
Next Run TightVNC Server which will prompt you to enter a Password and an optional View Only Password
Once that is done you can run it straight from the prompt I am using 1920x1080 which is my monitor maximum resolution.
$ vncserver :1 -geometry 1920x1080 -depth 24
Or you could create a script to save typing in the whole thing.
$ nano svnc.sh (call the file whatever you like and ending in .sh)
Add the line: vncserver :1 -geometry 1920x1080 -depth 24
Ctrl-x y <return> (To Exit Nano and Save)
Set the file to Execute
$ chmod +x svnc.sh
then to run
ToDo: Run at boot.
Install Tight VNC on your desktop from the link below or most VNC clients work I believe.
Then use <Your Pi IP>:1 (e.g. 192.168.1.2:1) as the host name when connecting.
Works Great, select full screen from the tool bar and a full 1080p 24bit desktop is yours from anywhere.