保存以下信息到.reg文件，执行即可。

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\ftp]
@="URL:File Transfer Protocol"
"AppUserModelID"="Microsoft.InternetExplorer.Default"
"EditFlags"=dword:00000002
"FriendlyTypeName"="@C:\\Windows\\system32\\ieframe.dll,-905"
"ShellFolder"="{63da6ec0-2e98-11cf-8d82-444553540000}"
"Source Filter"="{E436EBB6-524F-11CE-9F53-0020AF0BA770}"
"URL Protocol"=""

[HKEY_CLASSES_ROOT\ftp\DefaultIcon]
@=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,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,75,00,72,00,\
6c,00,2e,00,64,00,6c,00,6c,00,2c,00,30,00,00,00

[HKEY_CLASSES_ROOT\ftp\shell]
@="open"

[HKEY_CLASSES_ROOT\ftp\shell\open]

保存以下信息到.reg文件，执行即可。

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\ftp]
@="URL:File Transfer Protocol"
"AppUserModelID"="Microsoft.InternetExplorer.Default"
"EditFlags"=dword:00000002
"FriendlyTypeName"="@C:\\Windows\\system32\\ieframe.dll,-905"
"ShellFolder"="{63da6ec0-2e98-11cf-8d82-444553540000}"
"Source Filter"="{E436EBB6-524F-11CE-9F53-0020AF0BA770}"
"URL Protocol"=""

[HKEY_CLASSES_ROOT\ftp\DefaultIcon]
@=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,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,75,00,72,00,\
6c,00,2e,00,64,00,6c,00,6c,00,2c,00,30,00,00,00

[HKEY_CLASSES_ROOT\ftp\shell]
@="open"

[HKEY_CLASSES_ROOT\ftp\shell\open]