I need help installing air on win xp sp3

I uninstalled air a couple of months ago and something went wrong to the point that air will not install again.  I assume some piece of code or file is left over.  Air does not appear in the control panel to uninstall it there.

Here is the most recent install attempt log:

[2012-08-09:00:49:44] Runtime Installer begin with version 3.3.0.3670 on Windows XP x86

[2012-08-09:00:49:44] Commandline is:

[2012-08-09:00:49:44] No installed runtime detected

[2012-08-09:00:49:47] Starting runtime install. Installing runtime version 3.3.0.3670

[2012-08-09:00:49:47] Installing msi at c:\docume~1\owner\locals~1\temp\air314.tmp\setup.msi with guid {65CB4C08-C47B-4A7E-A6A4-50C06ADA5FC6}

[2012-08-09:00:49:47] Error occurred during msi install operation; beginning rollback: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1601" errorID=0]

[2012-08-09:00:49:47] Rolling back install of c:\docume~1\owner\locals~1\temp\air314.tmp\setup.msi

[2012-08-09:00:49:47] Rollback complete

[2012-08-09:00:49:47] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="1601" errorID=0]

What is msi?

Can anyone help clear this up?

Thanks ahead of time.

Kirt