InfoPath Dev

Hi,

What I want to do is allow my user to browse in a dialog another document library that is on a same Sharepoint Site (WSS3.0).

 I know how can I do for browse my current Library (that's pretty simple) but for another library I have some trouble of access on my site.

For save I can use the webservice but for browse I do know how to do...

Can this be done with the Infopath DOM? or I need to use another dll (Sharepoint or Winform)?

I need just a direction to achieve this goal....

 Thanks for your help

 Thierry