your screenshot shows me that you are not in an Edit session - therefor you canÂ´t digitize a line. If you open an Edit session you will get this menu, please see attached screenshot menu_1.
I tried to reproduce your problem of not getting a menu while digitizing a line...I am using ArcGIS 10. I started to digitize a line, pushed CTRL+L and I could specify a length. Yes, you are right - as long as I didnÂ´t close the Length field (see attached screenshot Length), a menu will not pop up. If you still have the problem, I would suggest to contact your support.
I hope I could shed some light, Anna
Anna Schwabedal _______________ Product Marketing Esri Germany
I was once an AutoCAD and Microstation draftsman for over seven years before I switched to ArcGIS 8.0 years ago. I worked a lot of the tutorials before I finally switch from drafting to analysis mode. It took me a little bit to understand that data and layout views were similar to workspace and paper space along with the little things that make editing difficult at first.
Hang in there and ArcGIS 10 has finally demonstrated some CAD editing techniques like the advanced snapping that former CAD users have needed for a long time.
If you have any more questions, keep posting and the ArcGIS community will keep pointing you in the right direction.