Heres a few tips & tools...
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Developing page rank from your own site
Make sure you link up as many pages as possible to your main target pages preferably using keyword rich text links. In time these can show as backlinks boosting PR + usability.
Target key pages with links - (a pay site would be tours, sign up & index pages - link to them from all others)
Avoid stop & filtered text Such as excesive use of and, but etc...
Useful tools
Google's new tool bar Beta
Link integrity