Infinity Char on Windows

[Mark Greenberg]

I am trying to port my math stacks from Mac to Windows.  Some of the  
stacks use the infinity character (like a sideways 8), but in Windows  
it displays as a box instead.  Does anyone know how I might make that  
display properly in Windows?  If the solution involves Unicode, be  
explicit because I've never tried to make Unicode work for me in Rev.

TIA, Mark Greenberg