I have done some research and this is what I was told by Sulka on the VMK Forums to fix this problem. It works great.

If you're on a PC and want to play VMK full screen (with all the buttons showing and large fonts), do the following:
1. Make your screen resolution 800x600 pixels
2. Click on the Start bar, Click on Run..
3. Paste "iexplore -k https://secure.disney.go.com/vmk/en_US/register/index?name=LoginPage" (without the quotes " ") to the text entry field and press enter
4. Log in and play!
5. To stop playing, press Alt-F4
Full screen looks awesome and is good for older computers with lower screen resolutions. If you start playing full-screen, remember to check on the VMK website for news on what's happening with the events (following above instructions bypasses the front page of the website).