Capital I letter causes problem in refactoring.

Hi,

I use intellij on windows xp professional with Turkish regional settings.
My problem is when I want to usage search for a class or any token contains "I" search fails.
I know some java apllications convert "i" to "?" (capital "I" with dot) and "?" (small "i" without dot) to "I". is this reason? How can I use usage search or refactoring for these cases?

thanks....