Link or Shortcut to R/3 transaction

Hi All!!

I am working with Web Dynpro Java.

One of the requirements is to access from my WDJ to a R/3 transaction (for example CJ20N). I have not ITS.

Is there any way to set a link or shortcut on the Web Dynpro Java to access to this transaction?

I think if I find an ABAP method or FM which execute a file, I could execute the .sap generated on the shortcut of the transaction, and accross XI I can use it on Web Dynpro Java.

Any help will be apreciated.

Thanks and regards,

Manuel Míguez.