CVS Checkout/Export using Visual Build Help needed

[Selva]

Hi,
I am trying to automate the build process using Visual Build and i am using CVS. As a first step i tried to export a particular version. But it is displaying the following error. Can any body help me abt where i am wrong?

04/10/2007 12:27:16: --------------------Starting Build: 'LDI_DGA_Tools.bld'--------------------
04/10/2007 12:27:16: Building project step 'CVS Checkout'...
Step default property 'Database' = ':/cvs/AES'
"C:\Program Files\TortoiseCVS\cvs.exe" -d :ext:SelvaC@199.74.122.33:/cvs/AES -q -t -z0 export -r LDIBC_CMCF_Load_4-3-2_Version1 Code/Binary_Converter
-> Tracelevel set to 1. PID is 1896
-> Session ID is 76847053e950000
-> main loop with CVSROOT=:ext:SelvaC@199.74.122.33:/cvs/AES
cvs export: warning: unrecognized response `'ssh' is not recognized as an internal or external command,' from cvs server
cvs export: warning: unrecognized response `operable program or batch file.' from cvs server
cvs [export aborted]: end of file from server (consult above messages if any)

Process completed with exit code 1
04/10/2007 12:27:17: Step 'CVS Checkout' failed
04/10/2007 12:27:17: Build ended.