I was getting tired of it too so I called tech support. Here is what
to do from their email.
To disable the "Start Page" when starting Capture, see the following
steps.
1. Open any design in Capture.
2. From the Menu bar, select "Accessories \ Cadence Tcl/Tk Utilities \
Utilities".
3. In the "Tcl/Tk Applications Dashboard", select 'Extended
Preferences' and press the Launch button.
4. In the column 'Settings', uncheck "Load web page on startup" and
then the 'OK' button a the bottom.