Funny Currency symbol

hi bro,

My currency symbol come out "?" where it should be "$".

Check my "Regional Setting" which set as English (US), currency is "$".

My friend login his network ID to my computer and browse. The currency symbol is "$".
But I login my Network ID at any workstation, it come out "?".

Virus?
Network ID profile crash?
Or the webpage issue? (Webpage in ASP)

Any idea?

Thanks in advance.