How to install 32bit Premiere Element 10 on 64bit Windows7?

Question

Premiere Elements 10 comes with 32bit and 64bit programs.  The 2 versions each use different codecs.  My camera manufacturer only supplies 32bit codecs, so the 64bit Premiere Elements 10 program cannot work with my camera's video files.  The 32bit program works with the 32bit codecs that came with my camera, but the 32bit Adobe Premiere Elements 10 installer will not permit installation on a 64bit Windows7 (the error message directs the 64bit Premiere Elements 10 program be installed instead).
Have repeatedly contacted Adobe.  They alternately tell me to install the 32 bit program, but haven't offered any instructions as to how to get the installer to run on a 64bit Windows7 OS.  64bit Windows7 should run any 32bit or 64bit app, so I'm hoping someone can provide insight (or hopefully instructions) on how to perform 32bit install.
Note, already have tried Windows compatibility mode for forcing installation.  This gets past the installer restriction for 64bit OS, but installer still fails.

Answer 1

Bill,
Appreciate your comments.  32bit codecs from manufacturer install on 64bit Windows7 and support any 32bit app.  That includes 32bit windows media player and camera's manufacturer specific video edit program.  But I differ that 64bit apps can use 32bit codecs.  32bit Adobe Premiere Elements 10 works with manufacturer's 32bit codecs when installed to a 32bit Windows (which unfortunately is not my current workstation which is 64bit Windows7).
One of my camera's is Creative Vado HD, and it is my impression that Creative does not feel compelled to supply 64bit codecs since they supply their own video editor 32bit app.  Of course, I cannot combine clips from multiple cameras on a manufacturer specific one-camera edit app.
Adobe Premiere Elements 10 explicitly names the Creative Vado HD as a supported camera on Adobe's website ... but apparently not the 64bit version of Premiere Elements 10.  Have tried 3rd party 64bit codecs for H.264/MS-ADPCM which are at best partially functional with the 64bit Adobe Premiere Elements 10 app (they are generic and not camera specific).
The other camera is a Canon Vixia HG20 and is fully functional with either 32bit or 64bit Adobe Premiere Elements 10.
2 yrs ago I actually tested to insure Adobe Premiere Elements supported both cameras, but that was when I ran a 32bit workstation and Adobe Premiere Elements was only supplied as a 32bit app (ver9 trial I think).  I should have re-verified with Premiere Elements 10 before making the purchase commitment.  I hadn't anticipated that PE10 had gone 64bit and wouldn't support legacy 32bit install.
John,
Yes, I've verified Adobe Premiere Elements 10 32bit version works with both cameras.  I installed to my old workstation (32bit OS).  Installing under virtual XP is an option on my current 64bit windows7 workstation, and that is something I do for really old apps (like 16bit apps).  Shouldn't be necessary to run a 32bit app in a virtual environment on a 64bit windows7 that runs both 64bit and 32bit apps (half of the windows7 bundled apps are still 32bit).  Still looking for the 32bit installation solution before resorting to that.