how to link two points on map?

Dear all,

I need to draw some lines on map. I have 2 variables latitude(i,j) and
longitude (i,j), could anyone please tell me what function should I use to
link two points? say draw a line between latitude(0,0) and latitude (0,100).
Thank you!

-- 
Cordially,
Hongyan
鸿雁

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Received on Tue Sep 7 17:13:37 2010