Event error

Searching the MS KB gives several problems that could cause a System Error 53. It's hard to tell without more details. In general, it appears to be related to an "oops" involving the network. Some causes are:
-The WINS database has an incorrect or missing entry for the import or export server. If so, Ensure that WINS and/or LMHOSTS file contains proper entries for both the import and export servers.
-Password sync problem in an NT/Netware environment. See MS KB Q188356 for resolutions.

If u are using real player,the Error #53 is "Invalid host string in requested URL"
Get the update,it will fix it.
Other error 53 is caused by the rename of print server by service pack 3 on NT.The SP does not update the registry,and the share are no loger available.If is the case,edit the registry like this :"HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\SERVICES\LANMANSERVER\SHARES",thenupdate the path of each shared printer.
If u are using inetrnet email gateway,the error 53 is "file not found".This means you didn't install the RAS (Remote Access Server) package on NT. This is the dialup networking support. It is needed for the Email Gateway/Serial Gateway and Telnet products even if you only use your LAN and not a modem.
Other Error 53: the computer name specified in the network path cannot be located. If you haven't verified the settings in protocol.ini, that would be a good
place to start. Other possibilities are wrong driver (just 'cause it loads
and binds doesn't mean itworks), and frame type mismatch (may need to
specify in protocol.ini). If the same machine has been working using the
NetWare client, compare settings in protocol.ini with net.cfg.
That is all i know abt. this error.I hope will help.