I just sent a message to Jim that changing keyboard didn't work. But I just tried, as I am typing this message and it seems to back to normal. Really weird problem.
Thank you for your suggestions.

>This sounds like you changed your keyboard. Perhaps U.S. (International).
>
>The apostrophe will appear if you follow the apostrophe by a consonant. But if you follow it by a vowel, it will give you the accented character instead.
>
>In Windows 2000, you have to check "input locales" in the keyboard properties.
>
>Note that if you have more than one keyboard (or input locale?) defined, you can switch between them with Alt-Shift. However, the setting is specific for each individual program - it is not system-wide.
>
>BTW, US-International is great if you need to type foreign characters.
>
>HTH,
>
>Hilmar.
>
>>A few days ago I started having problems with apostrophe key as following:
>>1. when I type this key, the cursor does not move forward and I have to press space bar to show me that I actually typed this key.
>>2. sometimes instead of apostrophe it types a foreign letter with accent (like u with two dots above it).
>>3. the same happens when I press Shift-Apostrophe.
>>
>>My keyboard it set to English (United States).
>>
>>Any suggestions what could be done to fix this problem?
>>
>>Thank you.