No vista drivers for my Mobo

Biostar itself may not be providing vista drivers for your motherboard, but the manufacturers of the chips used on your board are supported and in that case, you have to go directly to them for the drivers.

For Vista 64:

NForce Driver

Realtek HD driver I'd personally use this instead of your sound blaster SE. Better quality sound and a better interface, plus vista is supported

Marvell Ethernet driver

For Vista 32 bit:

Nforce Driver

Same realtek link from above

Marvell ethernet driver (may work with vista 64 as well)