Go to control panel, system, hardware, Device manager, right click on the "unrecognised devices" (1 at a time of course), proprties, details tab this will give something similar to: PCI\VEN_8086&DEV_1229&SUBSYS_005C1014&REV_02\4&172 A2BDD&0&00F0
VEN_8086 will give the vendor of the device
DEV_1229 will give the device name
go to
http://www.pcidatabase.com/ and you will find theactual vendor and the device -then you can search for correct drivers.
A bit tedious but should sort you out.