File list (Check if you may need any files):
stdafx.h
stringfinder.h
timehandling.h
utils.h
Winamp.h
newOgc.plg
OGCDLL.plg
newOgc.mak
License.txt
newOgc.sln
newOgc.sln.old
newOgc.suo.old
newOgc.vcproj.7.00.old
newOgc.opt
OGCDLL.opt
newOgc.positions
newOgc.vcproj.Can-Vista.Can.user
OGCDLL.dsp
OGCDLL.dsw
newOgc.ncb
OGCDLL.ncb
newOgc.vcproj
newOgc.suo
UpgradeLog.XML
_UpgradeReport_Files\UpgradeReport.css
....................\UpgradeReport.xslt
....................\UpgradeReport_Minus.gif
....................\UpgradeReport_Plus.gif
common\beamdef.h
......\cl_entity.h
......\com_model.h
......\com_model.h.bak
......\const.h
......\con_nprint.h
......\crc.h
......\cvardef.h
......\demo_api.h
......\director_cmds.h
......\dlight.h
......\dll_state.h
......\engine_launcher_api.h
......\entity_state.h
......\entity_types.h
......\event_api.h
......\event_args.h
......\event_flags.h
......\exefuncs.h
......\hltv.h
......\interface.cpp
......\interface.h
......\in_buttons.h
......\itrackeruser.h
......\ivoicetweak.h
......\mathlib.h
......\netadr.h
......\net_api.h
......\nowin.h
......\particledef.h
......\pmtrace.h
......\qfont.h
......\ref_params.h
......\r_efx.h
......\screenfade.h
......\studio_event.h
......\triangleapi.h
......\usercmd.h
......\weaponinfo.h
Debug\apihook.obj
.....\attack.obj
.....\bind.obj
.....\calcscreen.obj
.....\color.obj
.....\cvar.obj
.....\GenericPatch.obj
.....\interpreter.obj
.....\menu.obj
.....\OGCDLL.pch
.....\patchtools.obj
.....\playeritems.obj
.....\sprites.obj
.....\stdafx.obj
.....\stringfinder.obj
.....\timehandling.obj
.....\vc60.idb
.....\vc60.pdb
engine\anorms.h
......\beamdef.h
......\cdll_dll.h
......\cdll_engine_dll.h
......\cdll_int.h
......\cl_dll.h
......\cl_entity.h
......\const.h
......\crc.h
......\custom.h
......\customentity.h
......\cvardef.h
......\dlight.h
......\edict.h
......\eiface.h