|"Not sure what specs to list"|
CPU? Just saying it's a Pentium 4 doesn't tell us much except that your system is old. What clock speed? What FSB speed?
How much RAM - 256MB, 512MB, 1GB, 2GB, etc?
What type - SDR, DDR, DDR2, etc?
What speed - 266MHz, 333MHz, 400MHz, etc?
And while you're at it, which anti-virus are you running & what programs are installed that load at startup?