C: Drive not performing properly

According to PC Pitstop, my C: drive is not performing properly it is running to slow. I have a 10Gig hard drive partitioned from the mfg: C: 2GB and D: 8GB. D is running fine. I have run defrag and checked with mfg who helped me determine hard drive was fine. I recently upgraded ram to total of 160MB, but also notice resources are always low, but I think that is due to Quickbooks running in background for our business. Micron told me to re-format C: drive and start over, but I don't really want to do that. Any explanations for suggestions? Thanks.

I'm assuming the 2GB partition is for OS.
How much of it has been used?

<b>
"Now drop your weapons or I'll kill him with this deadly jelly baby."
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256MB of RAM should be adequate, but if possible get Partition Magic and resise the partition to 3GB. I always like a GB free to accomodate unforseen stuff. The swapfile has as much room as it needs then. If you go "MSconfig" in the system tools, click on the start-up tab and it will show you programs that are initialised on start-up. Systray, Rundll, Rnaapp, and explorer should be left running, but depending on what software you have you may be able to de-select others. Just try one, see what happens and if you want re-select it. Remember to run disk cleanup and defrag regularly.

<b>
"Now drop your weapons or I'll kill him with this deadly jelly baby."
</b>