I've heard of some other people having this problem but I have yet to find a solution. I originally had OneNote 2007 installed on my Lenovo x200t (Windows 7 x64) and everything was working fine. Then, all of a sudden, I load up OneNote and all of the pen tools are grayed out. I can still use the pen but I can't change the color or select other pens. I tried installing OneNote 2010 technical preview and I have the exact same problem. I also ran a repair from the install menu and that did nothing. The pen works fine in other programs such as Journal. Any help would be great. Thanks!