install and conf of netflow analyzer for best performance

hi i am a university student ,working at my university's computer center (in network department) , our network admin assgn me to manage our neflow analyzer, about 1 week before.

our netflow analyzer 5.0 is working very slowly, report for last hour is open in 10 mins

, i think it is becouse of opur hardware configuration,
which is 1GB of RAM ,
70 GB of Harddisk and
(Pentium 3)x86 family 6 model 7 stepping 3 CPU (CPU utilization is at 90 , when we start the netflow)

so we decided to get a powerful PC with,
Pentium 4 2.6+ GHz
1 GB(or more) of DDR
100 GB(or more) of Hard disk SATA

will this configuration ok for netflow analyzer?

how should i install and configure the netflow analyzer for best performance??

these are the questions.

thank you for ur replies