Damn to Arabic windows ,
while online farsi content is spreading day by day,
we are facing a big hazard for searching in farsi language.
many users are using arabic windows with persian interface (Parsa , Sina , etc ...)
this damned windows' character sets are not compatible with farsi unicode standard.
the worst point is that some damned software companies have released "fixes" for Windows XP , which replaces win XP DLLs and downgrades your codepage support to arabic.
It's common in Iran , you must downgrade yourself to be COMPATIBLE.
Many iranian sites and weblogs suffer from this problem even well known blogs like
hoder.
So when you want to search a keyword inculding farsi "yeh" letter you must search twice. one time with arabic "yeh" letter and one time with farsi "yeh" :
Google Search: GPS Iran with arabic yeh
Google Search: GPS Iran with farsi yeh
Anyway, If you have Windows XP , I beg you not to install any software to fix your farsi keyboard , It does not need fixing , It's OK.
If you have Windows 98 or ME , you can use a free upgrade instead of using farsi/arabic windows :
Standard Farsi Keyboard for Win 95/98/ME