User might just execute one transaction/program but STAD might display many entries for that single transaction/program  each entryis a dialog step in SAP term. How many dialog-steps are displayed under a transaction/program is related to program/transaction design and how that transaction is executed.
Connections of the types TCP, ISO-on-TCP, UDP, ISO and S7 connection are configured in the SIMATIC Manager in NetPro. These connections are configured in the same way in STEP 7 (TIA Portal). In STEP 7 (TIA Portal) the S7 connections have to be configured in the Devices and Networks editor, in the Network view.
Re: Compatible Win7 network driver bharkins Nov 19, 2009 9:42 AM (in response to mark_h_@intel) I went through the network diagnostics again, and the system is trying to establish connection with the Intel adapter. The final message I get is :LAN doesn't have a valid IP configuration..