Dell OpenManage Server Assistant CD - PowerEdge 2500

I am in need of a "Dell OpenManage Server Assistant CD". I have a PowerEdge 2500 Server which was bought atleast 2 to 3 years ago. 

 

I spoke to Dell Tech support and they said that the newer version of the Dell PowerEdge Server CD (ver 8.x) may not support the old PowerEdge 2500 Server. They suggested that I should get a version of that Server Assistabt CD from 6.x to 7.

Can anyone suggest where I can get the older version of this CD.

 

Thanks in advance for Help.