SAP GUI Connection problem in WinNT environment

hi

Some of our end usrs were having problem in connecting to our SAP Server.

Though their reaching the R/3 Server but still after giving user id & password, its not proceeding.

After checking Dispatcher error log, i found the error as "10054: WSAECONNRESET: Connection reset by peer". The SAP Note 155147: describes the problem and puts some solution also.

But what i want to know, do i have to do the Registry changes only in R/3 Server or to all End user PCs with WinNT ??

Please clarify.