Geowalk do not start local with any browser. Please copy to the web.
You have to integrate it as any other flashfile. 

<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0"
width="600" height="400" id="geowalk" align="middle">
	<param name="swLiveConnect" value="true">
	<param name="allowScriptAccess" value="sameDomain" />
	<param name="movie" value="geowalk.swf" />
	<param name="quality" value="high" />
	<param name="scale" value="noscale" />
	<param name="salign" value="lt" />
	<param name="bgcolor" value="#ffffff" />
	       <embed src="geowalk.swf" 
	                  quality="high" 
	                  scale="noscale" 
	                  salign="lt" 
	                  bgcolor="#ffffff" 
	                  width="600" 
	                  height="400" 
	                  name="geowalk" 
	                  align="middle" 
	                  allowScriptAccess="sameDomain" 
	                  type="application/x-shockwave-flash" 
	                  swliveconnect="true" 
	                  pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>

Look to the attitudes in the file geowalk.xml 

<?xml version="1.0" encoding="UTF-8"?>
<config>
        <lang>de</lang>
        <zoom>8</zoom>
        <lat>51.55</lat>
        <lng>3.45</lng>
</config>

Indicate the specific starting data here. The zoom range lies between 0 and 17.
Try out the correct attitude. 0 = World, 17 = Street.

At this time we support the following languages:
  • English = en
  • German = de
  • Spain = es
  • French = fr
  • Polish = pl
You can't change the size of Geowalk on this version.
You need no registration for Geowalk, but it is necessary to register at http://www.google.com/apis/maps/signup.html
Include the registration on your website. 

<script src="http://maps.google.com/maps?file=api&v=2&key=ABQIAAAABWmbKe......mYqu55sfdg" type="text/javascript"></scrip>

We explicitly point out that we do not take any responsibility for the usage of Geowalk.

We hope you enjoy Geowalk on your website.