D97FCA291CCD45386D17756A525CA231BF3574F7. (There is a period at the end, it's hard to see.) Did you put that there? Typo maybe?

Services in XP can be automatic, manual, or disabled. One should never delete a service, as that entry will be gone forever, and, knowing XP, it will always be looking for it when it starts up from cold boot. The resulting error window can get quite annoying every boot.

I did both a Google and Bing search and came up with pretty much the same thing, but bing gave me something. Whether or not this is what you are looking for depends on no typos as given.

D97FCA291CCD45386D17756A525CA231BF3574F7 (without the period)
http://www.bing.com/search?q=D97FCA291CCD45386D17756A525CA231BF3574F7&qs=n&form=QBLH&pq=d97fca291ccd45386d17756a525ca231bf3574f7&sc=0-0&sp=-1&sk= (this is bing)

D97FCA291CCD45386D17756A525CA231BF3574F7 (without the period)
https://www.google.com/#bav=on.2,or.r_qf.&fp=bc1e4116e6a2d5f0&q=D97FCA291CCD45386D17756A525CA231BF3574F7 (no result)

To get to services, type this: services.msc in the RUN box and press enter. Look for this exact entry in new service window and find it, and see if it is set to start automatically. If it is, set it to either manual or disabled. Reboot and see what happens. Otherwise, any other action such as manually deleting it will cause XP to complain.

You can always scan for malware using this tool: http://filehippo.com/download_malwarebytes_anti_malware/
Shareware in this case means you get the full version for thirty days and then it will revert to a free version at expiry.

Under no circumstances should you manually delete this service entry just because you do not know what it is. If Malwarebytes finds it, fine, allow it to quarantine and then it will delete it. That way, you will have a copy left if you need to restore it in case it is a false positive, but if not, leaving it in quarantine will do no harm to your system.