Add/Remove optional features of Windows XP

To dramatically expand the list of applications you can remove from Windows XP after installation, navigate to C:\WINDOWS\inf (substituting the correct drive letter for your version of Windows) and open the sysoc.inf file. Under Windows XP Professional Edition RC1, this file will resemble the following by default:
[Version] Signature = "$Windows NT$"DriverVer=06/26/2001,5.1.2505.0
[Components]NtComponents=ntoc.dll,NtOcSetupProc,,4WBEM=ocgen.dll,OcEntry,wbemoc.inf,hide,7Display=desk.cpl,DisplayOcSetupProc,,7Fax=fxsocm.dll,FaxOcmSetupProc,fxsocm.inf,,7NetOC=netoc.dll,NetOcSetupProc,netoc.inf,,7iis=iis.dll,OcEntry,iis.inf,,7com=comsetup.dll,OcEntry,comnt5.inf,hide,7dtc=msdtcstp.dll,OcEntry,dtcnt5.inf,hide,7IndexSrv_System = setupqry.dll,IndexSrv,setupqry.inf,,7TerminalServer=TsOc.dll, HydraOc, TsOc.inf,hide,2msmq=msmqocm.dll,MsmqOcm,msmqocm.inf,,6ims=imsinsnt.dll,OcEntry,ims.inf,,7fp_extensions=fp40ext.dll,FrontPage4Extensions,fp40ext.inf,,7AutoUpdate=ocgen.dll,OcEntry,au.inf,hide,7msmsgs=msgrocm.dll,OcEntry,msmsgs.inf,hide,7msnexplr=ocmsn.dll,OcEntry,msnmsn.inf,,7smarttgs=ocgen.dll,OcEntry,msnsl.inf,,7RootAutoUpdate=ocgen.dll,OcEntry,rootau.inf,,7Games=ocgen.dll,OcEntry,games.inf,,7AccessUtil=ocgen.dll,OcEntry,accessor.inf,,7CommApps=ocgen.dll,OcEntry,communic.inf,HIDE,7MultiM=ocgen.dll,OcEntry,multimed.inf,HIDE,7AccessOpt=ocgen.dll,OcEntry,optional.inf,HIDE,7Pinball=ocgen.dll,OcEntry,pinball.inf,HIDE,7MSWordPad=ocgen.dll,OcEntry,wordpad.inf,HIDE,7ZoneGames=zoneoc.dll,ZoneSetupProc,igames.inf,,7
[Global]WindowTitle=%WindowTitle%WindowTitle.StandAlone="*"
The entries that include the text hide or HIDE will not show up in Add/Remove Windows Components by default. To fix this, do a global search and replace for ,hide and change each instance of this to , (a comma). Then, save the file, relaunch Add/Remove Windows Components, and tweak the installed applications to your heart's content.
Cool, eh? There are even more new options now under "Accessories and Utilities" too.