I have problem with Sales Orders Sample!

When I try to run it I receive this message :

"The AdventureWorks sales data is not available for download.Please verify that the publication has been configured properly and that the InstallsSalesOrdersSample.bat batch file was executed"

Could someone tell me where is the problem?

I have already followed the instructions from the .HTML file in the replication folder!

Also,When I try to execute the InstallSalesOrdersSample.bat batch file i receive in the command prompt the following message:

"Started: 2007-01-09 15:35:43.167
Changed database context to 'master'.
Msg 208, Level 16, State 1, Server IMEPC, Line 4
Invalid object name 'master.sys.databases'.

The publication could not be created."

if someone who has already run this sample can help me,I will appreciate it very much!!!!!!!!!

Thanks in advance!