It's a Jama motherboard, but that doesn't really help much.

Here's some manufacturer blurb with basic specs:
https://plmiscelektronika.elektroda.pl/plmisc … 8_2000_1135.htm

Here's BIOS on Jama's old site:
https://web.archive.org/web/20070125195616/ht … a/drivers/bios/

Here are drivers, at least their file names (the links are dead):
http://www.jama.com.cn/jama/drivers/driver-mb.htm
- but consider that these are ancient drivers predating Windows XP. If you want to run XP, these won't help. Just get 4-in-1/Hyperion drivers from the Via site that do have XP support. If you intend to install XP service packs (probably a bad idea on a system this old, in particular SP3 massively increases OS overhead and will slow a P3 down to a crawl), take drivers at least as new as the service packs you intend to install. If not, go for end 2001 drivers - 4.43 - and you should be good.
http://download.viatech.com/

Same for the C-Media CMI-8738. C-Media doesn't have drivers to download on their site, but they are widely available, eg here:
https://download.cnet.com/C-Media-CMI8738-WDM … 4-10495782.html

And as for that modem... well, if the Jamo site lists it and your OS asks for drivers for it, I'd say there's a good chance there is a modem chip onboard on your motherboard. If so, it probably feeds some header pins you can stick a riser on. I know PC-Chips did the same around this period. Now, you almost certainly don't need an analog modem, but if you want your device manager to look nice and neat, install drivers for it. Challenge is that "HSP56" is more of an indication of specification than an actual name. I'd say best route is to identify the modem chip on the motherboard and look for drivers for that. If you can't find it, take the best high-res pics you can manage and perhaps we can.

Oh, and general rule applies: always install chipset (4-in-1) drivers *before* any other drivers. If you install others (particularly AGP) first, expect poor performance and stability issues. If you've already done that, a reinstall might be a good idea.

Read in an old forum that the JAMA M7-AV694 is a rebrand of the ECS P6VAP-A Plus so maybe it's manual will help.
https://theretroweb.com/motherboard/manual/p6 … c7276222300.pdf
Can you post a picture of the board and also give the current BIOS ID string ? If the BIOS is dated sometime in 2000 then you are probably good.
From archive is a fair spec sheet in text form below...

Ah, PC Chips lottery strikes again. No wonder the solution looked familiar 😉

J1 is the modem riser, and looks like at least the ECS version of the BIOS had an option in it to disable "Onboard PCI Modem". That's the alternative to digging up drivers for it, of course.