uninstallation: as dll files are created to support other programs and softwares working well, the data and functions are actually shared by many programs. when you uninstall a program, cnbbr300.dll may be mistakenly deleted.

How would the previous sentence be correctly capitalized?
Uninstallation: As DLL files are created to support other programs and softwares working well, the data and functions are actually shared by many programs. when you uninstall a program, CNBBR300.DLL may be mistakenly deleted.