To get rid of the rtutils.dll you can try the steps given below.
Turn on the system in safe mode by pressing F8 as soon as you turn on your system
Check the recycle bin to see you hav accidentally deleted the file. If so restore the file from the recycle bin.
If you have cleared the recycle bin then the best option would be to use a
file recovery option. A software called Recuva is available. It is a file
recovery software.
Sometimes the file could have been corrupted bya
spyware/virus/malware. In this case run the anti-virus and anti spyware. This can help you detect the
malware and restore the file back to normality.
else try to do a
system restoreXP->
Start-> Programs-> Accesories->System tools-> System restore
Vista->
Click on windows (left side bottom) -> Type (System restore) in start program bar-> and click on the same.
If you are facing the problem after a
software installation then try to uninstall the software and check for the error.
Try to clean up the registry
Try to update the drivers.
and if all of these don't work then try to download the dll file from the internet.