Using Magic Wand to select & enahance path in CS2

I have an aerial image in a .JPEG file which shows a  GPS track/route.  I would like to enhance/alter the appeareance of this track/route in the image.  For example, I would like to possibly increase the thickness of the track/route, possibibly change the color and most importantly be able to change the appearance of the track/route to appear as  a dashed or dotted line.  I do not wish to change the size or shape of the track/route as it currently appears on the image.  I am able to select this entire route using the Magic Wand tool but I am unable to further maninpulate it.   Any suggestions on how to most efficiently achieve my desired goal(s)?  I have thought about using Illustrator CS2 but it seems as though when using Illustrator there is no feasible way to select the track/route with the magic Wand tool like you can in Photoshop CS2.
See attached aerial image file which shows the GPS track/route.
Thanks!
Using Photoshop CS2 on a Windows PC

to increase the thickness, after you selected it, go to Select->Modify->Expand, make a new layer and with the selection still active, fill that layer with whatever color you want. Getting a pattern to follow that selection will be very hard to do though. You'd probably need to make a checkerboard brush, make a path that follows the red outline and then stroke that path with the brush you just made (make sure that the brush has a spacing of 100%)

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