What version (SP level, bits) of XP?
What version and what bits of Office 2010?
For example, http://technet.microsoft.com/en-us/library/ee624351%28v=office.14%29.aspx#section4 tells about the system requirements of MS Office 2010 Home and Student, and the differences between 32 and 64 bits versions of Office and 32 and 64 bits versions of Windows and the Service Pack required.
What happens if you go into services.msc and start that service? Check the event log in case of an error. Or did the install of this service fail, so it isn't even present?
Kees
hi, i am using Windows XP in my PC. Few days back i tried to install Microsoft Office 2010 but an error occured. the error which i got was
Error 1920.
Service 'Office Software Protection Platform' (osppsvc) failed to start. Verify that you have sufficient privileges to start system services.

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