the pc-chips integrated AT motherboards are plug n play pretty much for upgrading from a crappy system to a more powerful cpu, the latest versions support both slot 1 and socket 370(non-fcpga). P3 via Slot 1, two dimm slots, on-board everything, pretty low performance, pretty low upgrade cost.
Figure:
New ram
New pcchips board
New cpu
everything else built in. Everything lan,modem,sound,vga, etc.
Performance, lowest of the BX class motherboards. Decent except for video with the 810e chipset. BTW i have the 810e and its VERY VERY stable running a 366 at 550 and a 533 at 800. more so than the BX chipset boards. Wierd huh.
bummer over at forsale/trade is selling a bunch of integrated boards with 810 chipset for like $39 shipped, btw. might be a good time to snatch them up real quick, cause they'll cost nearly $100/piece retail for the same boards. he's a good seller and fast shipped. just fyi.