Server Performance Report - Memory in use - showing 'No data'

Hi,

My Server Performance Report from SBS 2003 continuously shows 'No
data'. I'm not sure how to troubleshoot this, could someone help
please?

I had to reload SBS after a fatal failure in the begining of the year
and since then haven't been able to get any memory usage stats. I've
just recently doubled the memory in my server, I'm now running with 4G
but I'm unable to report to the the Managing Director on whether this
'expense' is worth the money the company's paid. (I know it is, but I
need the numbers to prove it)

Thanks
ArchangelG

.