From what I'm reading, The Sims 2 will load slow for you no matter what.
My guessed specs for your PC:
1.8 or 2.0 GHz P IV
256 MB RAM
XX HD
Integrated Graphics
Integrated MOBO Sound
Your PC will probably not be able to handle Sims 2 in its lifetime, lest you wish to upgrade the processor, RAM, AND graphics card. If you have integrated graphics and a mere 256 MB stick of memory, chances are high that your PC may not even have an AGP slot for upgrade, but rather an extremely-out-of-date-for-graphics PCI slot. PCI is virtually useless for gaming now, except for maybe UT2K3.
If you really want to run The Sims 2 at a nice, smooth speed with good options enabled, I'd suggest a new PC. Thankfully, practically any new PC bought today can support The Sims 2.