you could try the following approach.
Activeate tab-delimited snap in the text snap options.
Try text snap region first, see if it works and you can insert the text in Excel or a similar program.
If not, deactivate it again, it sometimes can be tricky with autoscrolling
Use the normal region capture to get anything on the screen (within the drawn rectangle)
Scroll down until next non-snapped row is visible on top of the screen
Use the Ctrl-Shift-F11-key to repeat the last capture.
See, if the result is usable. By default text snap adds the new captured text below the previously captured.
And combine these tests with the tab-delimited-option in text snap settings.
Greg is right, text snap is very fickle, as MS and the Firefox developers changed code for the display of text on screen dramatically.
Oh, yes and TEST v7. It really may work better. Don't forget to install the FireFox-Addon.
<message edited by TomD101 on Thursday, July 05, 2012 1:46 AM>