Hello all! This method installs Acrobat Reader 6.0 right from the FEAD installer package. Haven't tried it on the new Reader 7 but think it will work too (if the installer is made the same way), you just have to replace 6.0 with 7.0 in registry values.
CODE
ADBERDR60_ENU_FULL.EXE -P"-S /V"/QN""

REG ADD "HKLM\SOFTWARE\Adobe\Acrobat Reader\6.0\AdobeViewer" /V "EULA" /T "REG_DWORD" /D "00000001"  /F
REG ADD "HKLM\SOFTWARE\Adobe\Acrobat Reader\6.0\FeatureLockdown" /V "bEFIPrintMe" /T "REG_DWORD" /D "00000000"  /F
REG ADD "HKLM\SOFTWARE\Adobe\Acrobat Reader\6.0\FeatureLockdown" /V "bPurchaseAcro" /T "REG_DWORD" /D "00000000"  /F
REG ADD "HKLM\SOFTWARE\Adobe\Acrobat Reader\6.0\FeatureLockdown" /V "bShowEbookMenu" /T "REG_DWORD" /D "00000000"  /F
REG ADD "HKLM\SOFTWARE\Adobe\Acrobat Reader\6.0\FeatureLockdown" /V "bUpdater" /T "REG_DWORD" /D "00000000"  /F
REG ADD "HKLM\SOFTWARE\Adobe\Acrobat Reader\6.0\FeatureLockdown" /V "bShowAdsAllow" /T "REG_DWORD" /D "00000000"  /F

DEL /Q "%SYSTEMDRIVE%\DOCUMENTS AND SETTINGS\ALL USERS\DESKTOP\ADOBE READER 6.0.LNK"
RD /Q /S "%SYSTEMDRIVE%\DOCUMENTS AND SETTINGS\ALL USERS\START MENU\PROGRAMS\PRINTME INTERNET PRINTING"

EXIT