Does format modify or change MBR

I have a DELL system which has come with a utility called PC Restore…provided by Symantec..which helps me restore my system to factory defaults when I run it….Its a great utility which saves me a lot of time & effort…But lately I have been facing some serious problems…with my system…for I was planning to go in for a debug or in short format reinstall.. I am just curious to know…if this will destroy the MBR n the pointer files which trigger the PC Restore..I believe it will.. modify the MBR.. if I format .. Am I correct.. or if I am wrong pls lemme know what exactly will happen..??

Thanks & Regards,

Fahim Solkar…