Using ITS Serviceparameters for navigation

Hello,

I am new to the ITS and want to integrate the SAPGui for HTML in an own Site (Frame).

I use the ITS service parameters for navigation as follows:

http://server:port/scripts/wgate/webgui/!?~transaction=FD03

Hereby I can start the transaction "Display Customer: Accounting Initial Screen"

How can I invoke this transaction with several initialized values and directly display the information of a selected customer?

How can I generally navigate adding (several) parameters to the URL and setting initialized values?

Best regards,

José