How to uninstall vista and install windows 7? -

Hi i m running vista now on my hp pavilion dv2000 laptop, i want to uninstall vista and install windows 7. Or keep vista and move everything to windows 7 (use that as my primary). I m also planning on have ubuntu on another partition. How do i do this? I ve tried shrinking the volume size my vista is on but i cant free up more than 18gigs, and i ve read its recommended that windows 7 have 30gigs atleast. If i understand correctly i shrink the vista volume, load windows 7 cd, then how do i remove all my stuff from vista onto windows 7? thank you

If you have an ISO of windows 7 then boot up with that cd, and load from DVD and its gonna ask to choose partition.Choose and install. Everything you have on that partition will be gone tho.

If you want to save your documents you have 2 choices - shrink the Windows partition and move all your documents to the 19 gig partition you can make, or move all your documents to an external drive. If you install 7 as the only operating system you ll wipe out anything on the partition you install it to, and to dual-boot it with Vista, you need a larger drive.