Oh, lord, please make it bigger (original map size).
You should DEFINITELY change the dots (or signs or whatever). They are barely seeable.
Do you have any version of Adobe Photoshop? I could give you my Glyphs map .psd file and you could use my 'signs' (what do you call these things?!).. Just don't use the yellow, CG doesn't seem to distinguish them from the map itself.
WEEEEEEEEEEEEEEEOh, and you can 'Remove' and 'Edit' posts, in case you didn't know.