INT 15 - Rational Systems DOS/4GW - UNINSTALL???                                
	AX = BF03h
	BX = PSPsee Program Segment Prefix segment of extender
	???
Return: ???
Note:	if BX is not the PSPsee Program Segment Prefix segment of the extender, it passes the call down
	  the INT 15 chain; this allows nested instances of the extender
SeeAlso: AX=BF06h