>>>
>>>In my File Type, as you correctly pointed, JS extension was controlled by Dreamweaver. I deleted it. Now when I click on the SpellCheck link, a "Open with" window pops up. I wonder what controlled JS extension file before I installed Dreamweaver ...
>>>
>>>Thank you for your help.
>>
>>Mine has 'Microosoft (r) Windows Based Script Host' as the description of the program the controls the js extension in my File Types. The application used to perform action is 'C:\WINNT\System32\WScript.exe "%1" %*' assigned to the 'Open' action.
>>
>>Hope this helps you reconstruct your computer.
>
>Thank you very much for your help. Changing to WScript did the job.

No problem, glad to be of some assitance.