Windows Server 2003 Question

[pzs22]

If I buy this:

http://www.newegg.com/app/ViewProductDesc.asp?description=32-102-225&depa=0

which is Microsoft Windows 2003 Server Standard Version with 5 Client Access Licenses will I be able to use the licenses on my Windows Small Business Server 2003?

Right now my primary domain controller is a Windows Small Business Server 2003 Standard Ed. If I buy the windows product above will I be able to use those licenses or will I lose them to the regular version of windows server when I install it? If so, do they sell copies with no CALS associated that will be apart of another network?

Hope that makes sense.