I work a lot using terminals (which look like the old DOS prompt) I have found the best font to display console output is a monospaced font Consolas. It is also very good for displaying code this was what it has been developed for. Consolas is included in Windows Vista and Windows 7 but not XP. I have found out that these can be downloaded from Microsoft. Download and install the setup and you will have consolas available.
It is part of Microsoft's clear type family and bundled with Office 2007.