I've been playing around with UMapper, another nice map-making service. It says that it's "the first universal web-based map-layering engine", and they claim that it's good for Blogger and WordPress, amongst other blog services. You get the choice of Google Maps, Microsoft Virtual Earth or OpenStreet. I've had a go with the Wordpress plug-in version and made this without having to leave the WP admin area:
[umap id="1747" size="l" alignment="center"]
STOP PRESS! July 23rd 2008: Version 1.2.0 of the UMapper plugin was released, but it broke the blog when I updated to it, preventing me accessing any of the blog admin. I had to delete the plugin files and reinstall version 1.1.8.
STOP PRESS! July 25th 2008: Version 1.3.2 of the UMapper plugin was released, but it broke the blog when I updated to it, preventing me accessing any of the blog admin, and giving the following error-messgae: Fatal error: Cannot redeclare media_admin_css() (previously declared in /home/beardedg/public_html/wp-content/plugins/umapper/Umapper.php:140) in /home/beardedg/public_html/wp-admin/includes/media.php on line 198. I had to delete the plugin files and reinstall version 1.1.8 again.
STOP PRESS! July 27th 2008: Version 1.3.6 of the UMapper plugin was released, but it broke the blog when I updated to it, preventing me accessing any of the blog admin, and giving the following error-messgae: Fatal error: Cannot redeclare media_admin_css() (previously declared in /home/beardedg/public_html/wp-content/plugins/umapper/Umapper.php:140) in /home/beardedg/public_html/wp-admin/includes/media.php on line 198. I had to delete the plugin files and reinstall version 1.1.8 yet again.
STOP PRESS! July 28th 2008: Version 1.3.71 of the UMapper plugin was released, and it installs but doesn't work right yet (nothing happens when I click on the "Add UMapper Map" icon in the write post admin screen). Many thanks to Vic for the info about the update.
STOP PRESS! July 28th 2008: Cleared the cache and rebooted, all's working now. Happiness is restored. 
STOP PRESS!! Error has been fixed in ver. 1.3.71, see http://wordpress.org/support/topic/192101
Thanks for the heads-up, Vic. I've just updated to Version 1.3.71 and it installs fine, but nothing happens when I click the "Add UMapper Map" icon. I'll update the post accordingly.
Stef, thanks for prompt response, could you, pls, contact me via e-mail, as I have several questions regarding your WP setup. I hope to fix problem as quick as possible, so you help is invaluable.
OK Vic, I'll send you something ASAP.
E-mail sent.
Not sure if its my system set up but your map is over laying your drop down menus on the right.
I am using IE7
Hi Maceman
My blog's set up for a display resolution of 1280 x 800 px, this enables me to fit 800px wide images etc into the blog entries. I could limit the max width of images etc to 650 px in order to prevent over/underlapping when viewed a lower resolutions, but that would leave a lot of unused space when viewed "widescreen".
Although I try, I can't please all of the people all of the time. Mind you, if somebody could figure a way of having images display at a size that self-adjusts according to the viewer's screen-res (i.e if screenres = 1280pxwide then picwidth = 800px, if screenres = 1024pxwide then picwidth = 650px) that would be cool! If you know of such a beastie, I'd be happy to give it a try.