First open task manager and look for this process "mwsoemon.exe" and end process on it if it is there. If not listed don't worry about it.
Have only hijackthis running and check the following items to fix.
You will NEED to reboot the computer when done.
All deletions are recoverable.
Mywebsearch bar came with your smiley central thing...(the 2000 smileys) and will keep installing all
kinds of crap, updating itself in the background without you knowing which will eventually lead to
more hijacks and system slowdowns/problems.
O2 - BHO: MyWebSearch Search Assistant BHO - {00A6FAF1-072E-44cf-8957-5838F569A31D} - C:\Program Files\MyWebSearch\SrchAstt\1.bin\MWSSRCAS.DLL
O2 - BHO: mwsBar BHO - {07B18EA1-A523-4961-B6BB-170DE4475CCA} - C:\Program Files\MyWebSearch\bar\1.bin\MWSBAR.DLL
O3 - Toolbar: My &Web Search - {07B18EA9-A523-4961-B6BB-170DE4475CCA} - C:\Program Files\MyWebSearch\bar\1.bin\MWSBAR.DLL
O3 - Toolbar: WhyPPC - {92F02779-6D88-4958-8AD3-83C12D86ADC7} - C:\WINDOWS\Downloaded Program Files\CONFLICT.1\toolbar.dll
(whyppc will eventually cause same problems as above, including changing your home page.)
O4 - HKLM\..\Run: [WebInstall2] C:\DOCUME~1\Sara\LOCALS~1\Temp\ins5F2.tmp /R
O4 - HKLM\..\Run: [MyWebSearch Email Plugin] C:\PROGRA~1\MYWEBS~1\bar\1.bin\mwsoemon.exe
O8 - Extra context menu item: &IE Toolbar search - res://C:\WINDOWS\Downloaded Program Files\CONFLICT.1\toolbar.dll/SEARCH.HTML
O9 - Extra button: WhyPPC (HKLM)
O9 - Extra 'Tools' menuitem: WhyPPC (HKLM)
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://imgfarm.com/images/nocache/funwebproducts/SmileyCentralInitialSetup1.0.0.6.cab
O16 - DPF: {92F02779-6D88-4958-8AD3-83C12D86ADC7} (WhyPPC) - http://69.57.140.27/~popinads/tbar/toolbar.cab
If you have nothing to do with any web hosting company or are not building a website or have no idea why the last item is there...a dialer..
then you can fix it too.
O16 - DPF: {73F0FD85-BD47-4A95-86D1-DE38860462C1} (PremiumHTML Class) - http://www.accesoplugin.com/dialercab/IberoDialerHTML.cab
When you reboot the machine delete the following files if they exist.
c:\program files\my web search <-this folder
With windows explorer run a search for ins5F2.tmp and delete it too.
Good luck and hope that helps.