desktop notepad

what is desktop notepad? why it always automatic open when i switch on my pc? ???
??? ??? ??? ??? ??? ??? ??? ??? ??? ??? ???
http://

Welcome harlems

Download HijackThis and post a log here in your topic:
http://download.cnet.com/Trend-Micro-HijackThis/3000-8022_4-10227353.html

then… what should i do…

Follow the advice here:

http://support.microsoft.com/kb/330132


An analysis of your HJT log shows nothing to worry about. Only 2 entries to be fixed if you want to since these entries have missing files and are therefore useless entries.

O9 - Extra button: Atomic Email Hunter - {491A6C2B-1046-486b-8A8F-7D26BCB79A9B} - F:\Program Files\AtomPark\Atomic Email Hunter\ie.htm (file missing) (HKCU)
Unnecessary (deactivated) entry that can be fixed. Unknown buttons or entries in the ‘Extras’-menu should be fixed.

O9 - Extra ‘Tools’ menuitem: Atomic Email Hunter - {491A6C2B-1046-486b-8A8F-7D26BCB79A9B} - F:\Program Files\AtomPark\Atomic Email Hunter\ie.htm (file missing) (HKCU)
Unnecessary (deactivated) entry that can be fixed. Unknown buttons or entries in the ‘Extras’-menu should be fixed.

If you have not already done so, visit the link Frank supplied.