Here is how to setup different landing pages for testing using prosper202:
http://profitapolis.com/featured/how-to-split-test-landing-pages-with-tracking202.html

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This will show the city or state in your landing pages…
<script language=”JavaScript” src=”http://j.maxmind.com/app/geoip.js”></script>
<br>Country Code:
<script language=”JavaScript”>document.write(geoip_country_code());</script>
<br>Country Name:
<script language=”JavaScript”>document.write(geoip_country_name());</script>
<br>City:
<script language=”JavaScript”>document.write(geoip_city());</script>
<br>Region:
<script language=”JavaScript”>document.write(geoip_region());</script>
<br>Region Name:
<script language=”JavaScript”>document.write(geoip_region_name());</script>
<br>Latitude:
<script language=”JavaScript”>document.write(geoip_latitude());</script>
<br>Longitude:
<script language=”JavaScript”>document.write(geoip_longitude());</script>
<br>Postal Code:
<script language=”JavaScript”>document.write(geoip_postal_code());</script>