Change this Key to:
[HKEY_CURRENT_USER\Softwar
e\Microsof
t\Office\1
1.0\Excel\
Options]
"RDPUsePrinterMF"=dword:00
000001
Download this patch:
http://support.microsoft.com/kb/958146/From the downloaded patch only install the excel.msp using the following command:
msiexec /p "\\server\share\EXCEL.msp"