If you want just a map to color and post, you can find good US maps on many sites. I 'borrowed' mine years ago from some other site. You can use mine if you'd like. My webpage is www.surgent.net/highpoints. Right click on the image, save it to the desktop, right click again, and open with Paint. There, you can customize the map. Save it as a gif and you're good to go!
If you want to be able to click on the map and have it link to other pages, you can copy and paste the code from my page to yours. The basic code goes like this:
(**Note: enclose all commands in <> brackets. For some reason when I include them here the program wants to make active links and fails to do so)
area shape=rect coords="A,B,C,D" href="where you want the link to go"
(more links go here, just like above)
img src="map's name" usemap="#usamap"
The A, B, C and D are opposite coordinates of a rectangle that forms the clickable area. Get these by running the mouse over the map where you want to be able to click. I usually do upper left (the A and B) and lower right (C and D). Just do this over and over again for various links.