Use typical radiant tags to get people data out of your Highrise account.
In your RadiantCMS root,
script/extension install highrise
or via GitHub
git submodule add git://github.com/kmayer/radiant-highrise.git vendor/exentions/highrise
You need to configure 2 settings (via script/console or the excellent settings extension):
Radiant::Config['highrise.site_url']
Radiant::Config['highrise.api_auth_token']
You can find these on the "My info" page of your Highrise account and clicking on "Reveal authentication token for feeds/API".
<r:highrise:each tag_id="1234">
<r:name/>, <r:title/>
ph: <r:phone/>, fx: <r:fax/>
<r:email/>
<r:highrise:each/>
RTFT (Read The Fine Tests), see the inline tag docs, and here's a quick, but probably incomplete summary:
<r:highrise [id="nnn"]> -- finds the person with id= (number)
<r:highrise:each [tag_id="nnn"]> -- finds people tagged with tag_id= (number)
<r:highrise:name/>
<r:highrise:title/>
<r:highrise:phone/>
<r:highrise:fax/>
<r:highrise:email/>
<r:highrise:web/>
<r:highrise:link/> -- creates an A HREF tag back to the Highrise page for this person