ClearType Enable/Disable

Question

G'day,
I had thought that ClearType was a system wide setting(As shown by all other threads in this forum). but apparently it's not, considering that both internet explorer and microsoft outlook can disable it for use within their programs.

I'd like to find which forum to ask if I can set ClearType off for programs that I have already built in Visual Studio 2003/2005 over the last few years. If it can be patched so the program no longer has horribly bolded text it would be great.

Further information
Question is for C# specifically.
Question is Visual Studio
Question is Graphical Interface orientated.
Operating System will be for Windows XP, Windows Vista, Windows Seven.






Reference:
Disabling Cleartype
Outlook
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.internetexplorer.general&tid=c398a1c1-4018-4fcc-8c3d-8f3b3db57204&cat=&lang=&cr=&sloc=&m=1&p=1
Internet Explorer
http://www.pcdoctor-guide.com/wordpress/?p=2518