将以下文件内容存为ABC.reg,加入注册表即可.

windows Registry Editor Version 5.00

[HKEY_CLASSES_rootdllfile]
@="Application Extension"
"AlwaysShowExt"=""
"EditFlags"=hex:01,00,00,00
"Noopen"=""

[HKEY_CLASSES_ROOTdllfileDefaultIcon]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,
  00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,
  65,00,6c,00,6c,00,33,00,32,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,31,00,35,
  00,34,00,00,00

[HKEY_CLASSES_ROOTdllfileshell]

[HKEY_CLASSES_ROOTdllfileshellregsvr32]
@="Regsvr32"

[HKEY_CLASSES_ROOTdllfileshellregsvr32command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,
  00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,65,00,
  67,00,73,00,76,00,72,00,33,00,32,00,2e,00,45,00,58,00,45,00,20,00,22,00,25,
  00,31,00,22,00,00,00

[HKEY_CLASSES_ROOTdllfileshellunRegsrv32]
@="Regsrv32 /u"

[HKEY_CLASSES_ROOTdllfileshellunRegsrv32command]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,
  00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,72,00,65,00,
  67,00,73,00,76,00,72,00,33,00,32,00,2e,00,65,00,78,00,65,00,20,00,2f,00,75,
  00,20,00,22,00,25,00,31,00,22,00,00,00