TouchFLO 3D theme for HTC Touch Diamond/Pro/HD.
1) Place the .cab file in your PPC through ActiveSync or Disk Drive mode.
2) Disable/Uncheck TF3D from your Today Plugins (Start-Settings-Today-Items-TouchFLO 3D)
3) Browse to the directory in your PPC where you've placed the .cab file and tap on it to install.
4) Tap ok to soft reset