Following up...
I have built the new rig! My dad gave me the machine I built for him (he never uses it) along with its LCD, a Samsung SyncMaster 151P, which is far quieter than my ViewSonic P95f+.
So it's an InWin IW-V523G microATX tower whose original PSU I had replaced with an Antec True380. I am now using this case with a Fortron FSP300-60PN PSU, whose 120mm fan is not audible outside of about 3' within range of it (for my ears, in my room). The motherboard and CPU are Asus P4B533-VM (passively cooled, 845G) and a P4 2.0A (I sold the 2.6C since it would require better i.e. noisier cooling) along with a 512MB stick of Crucial PC2100.
I spent an hour performing an ABSOLUTELY PERFECT application of Arctic Silver V between the cleaned off CPU die (used rubbing alcohol to clean off the crap left over from the Intel OEM HSF that my dad had) and the Thermalright SP-94 I bought; the layer is partially translucent (just barely) and is precisely enough to do the job, no more, no less. I'm running the P4 PASSIVELY COOLED with this sink; it's doing stock voltage of 1.525volts, and idles as low as 30C and hits a peak temp of 48C on long duration load. THERE IS NO FAN MOUNTED TO THE SP-94! However I closed up all openings to the system and the case has a side intake duct that runs directly onto the HS of the CPU, so the intake pressure to equalize exhaust pressure is taken cure of exlusively by cold intake air from this duct, thus, how I pulled off the passive cooling and those temps.
I installed a Visiontek Radeon 9600 card (passively cooled) to replace his Radeon VE and I am using the stock 80mm exhaust fan that came with this case but through a Zalman Fanmate at minimum setting; it's virtually inaudible, but if it's 3am and nobody's driving by my home and nothing is turned on (LCD must be off for this) U can still hear it. If my LCD display is on, that's all I hear (probably because it's 2' in front of my face, whereas the computer is 4' away from my ears, and under the desk). I moved my Sound Blaster Audigy 2 ZS Platinum Pro from my power rig to this box and now have this hooked up to my audio system (Onkyo TX-SR501, Audio Parts Inc silver cabling all around, Spendor LS3/5a monitors and a Velodyne CHT-8 woofer). I'm in audio bliss!!!
The hard drive is a Seagate ST340014A mounted in a Zalman heatpipe cooler with rubber isolation; it is not audible over the two fans (exhaust and PSU).
THANK YOU, EVERYONE FOR ALL YOUR HELP!
-Ed