[Xastir] couple quick q's

[N1OFZ]

Got a few questions I hope are simple:

Q1: How do you determine the tiepoints of a noaa map?  I want to use: 
http://weather.noaa.gov/radar/latest/DS.p19r0/si.kokx.shtml for my home 
area but I have no ideas at to the coordinates.  Is it trial and error?

Q2: I have 5 tiger maps that I use 99% of the time.  I have them 
bookmarked for quick recall.  Is there anyway I can save these maps so 
they don't have to be reloaded from the tiger server every time?  Even 
with the cable modem it does take more than a few seconds.

Q3: Finally has anyone ever thought of adding the ability to display 
more than one map at a time?  I dedicated an old 300 Mhz G3 w/ 1GB ram 
and OSX for Xastir only.  I have 3 17" displays hooked up to it all at 
1024X768.  The far left display has my main map at full screen.  The 
middle display has things like the messages window and incoming packet 
data.  The final display is empty.  I'd love to be able to display 
street level maps on the other display.  I have been successful doing 
this by running multiple instances of Xastir but it is not optimal to 
do it this way at all as it requires me to run 2 tncs for local traffic 
and two connections to the same Internet server.  I could do without 
the Internet server on the street level map but I can't see how to get 
around the two tnc issue.  Ideas?

Thanks for the great product!
Dana
N1OFZ