Consolas font available for download
If you are tired or not of Courier New font within Visual Studio you should check out Consolas font. Initially it was a part of Vista and not redistributable. Fortunatelly Microsoft has decided to make it downloadable from its website:
http://www.microsoft.com/downloads/details.aspx?FamilyID=22e69ae4-7e40-4807-8a86-b3d36fab68d3&DisplayLang=en
Curiosity: It says that font pack is made for Visual Studio 2006. Go figure. I didn't try it but I am pretty sure it would work with VS200x or any other application, too.
Another good choice for replacing Courier New is Vera Sans font. You can get it here:
http://www.bitstream.com/font_rendering/products/dev_fonts/vera.html