You have different ways to enter ed2k:// links inside mldonkey:

1) You can use the "dllink" command in the command line interface.

2) You can use the "ed2k_submit" program distributed here (need perl installed).

3) On Windows, you can install the following register entry (modify it to
change wwwlogin, wwwpasword, mldonkey_ip and mldonkey_port !) to send 
download queries to another computer running mldonkey (thx Paul Golubev):

mlsubmit.reg:
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Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\ed2k\shell\open\command]
@="\"C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE\"
\"http://wwwlogin:wwwpasword@mldonkey_ip:mldonkey_port/submit?q=dllink+%1\""
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