add and remove programs

In the Sysoc.inf file someone could tell me what a few of these do and what they are. Also I was wondering if someone could tell me what the numbers at the end stand for. I excluded some information except for the first lime. Thanks in advance.

NtComponents=ntoc.dll,NtOcSetupProc,HIDE,4 <<this number.
WBEM=ocgen.dll
Display=desk.cpl
Fax=fxsocm.dll,FaxOcmSetupProc,fxsocm.inf
NetOC=netoc.dll,NetOcSetupProc
iis=iis.dll,OcEntry,iis.inf
com=comsetup.dll
dtc=msdtcstp.dll
IndexSrv_System = setupqry.dll
TerminalServer=TsOc.dll
ims=imsinsnt.dll,OcEntry,ims.inf,,7
fp_extensions=fp40ext.dll
msmsgs=msgrocm.dll
WMAccess=ocgen.dll
RootAutoUpdate=ocgen.dll
IEAccess=ocgen.dll
OEAccess=ocgen.dll

 

error message

I keep getting an error message everytime I try to delete a program. It says "this action is only valid for poducts that are currently installed." So how exactly do I find where ever it's at and delet it?