INT 1A - CheckIt Year 2000 Fix v2.06 - INSTALLATION CHECK                       
	AH = 04h
	CX = 4555h ('EU')
	DX = 524Fh ('RO')
	BX = 0000h
Return: BX <> 0000h if installed
	    BX = major/minor/sub version (2068h = version 2.06.8)
Program: CheckIt is a TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. by Eurosoft (UK) Ltd. which corrects some Y2K-related
	  RTCsee Real-Time Clock bugs