I get this error when loading servers

I have been through this thread - http://www.worldofminecraft.com/node/2784 - and ended up doing this:
"Run>regedit>HKEY_CURRENT_USER>Software>JavaSoft>Prefs>minecraft

Edit the height and width values. It should work."

I changed the height to 500 (from 0) and width to 700 (from 116). This allowed me to open World of Minecraft and load a server - but not play. Just look at it. No movement at all.

After entering Registry Editor and reviewing this, the values reset to height-0 and width-116, default is not set.

Help is greatly appreciated.