you guys see, i'm a noob, so be nice to me

i bought a new cpu a couple of days ago, and of course I installed it immediatly.
my first problem was that the cpu wasnt recognized. after I visited the amd support site i knew i need a bios update.
i used uniflash and the bios i got from my mainboard manufacturor website.
allright, i made a backup and flashed my bios, and updated to the "new" bios i have downloaded.
usually i read unknown cpu at the startup now i can read athlon 2200 with 1,66 Ghz.
but it IS a Athlon xp 2800+ and not a 2200+!
I have no idea whats going on nor what i should do next...
some details:
Mainboard: Chaintech Apogee 7vjl KT333, Support AMD Duron/Athlon/Athlon XP+; VIA 8235with USB 2.0, ATA 133
on the user guide is standing CT-7VJL (don't know if it means anything...)
My OLD CPU:
AMD Athlon XP 2200+ with 1,79 Ghz; Socket A
My NEW one:
AMD Athlon XP 2800+, Socket A
i downloaded this file: http://www.chaintech.com.tw/tw/eng/Down ... &PISNo=138
(the first one)
in the really short description stands:
Feature : Supported AMD Duron
FSB133Mhz 1400+ 1600+ 1800+ CPU
I HAD a BIOS version 6 and now I installed a BIOS version 5 which was made AFTER v6! (I compared the development dates of both versions.
v6: xx-xx-2002
v5: 09-23-2003)
i finally want my pc to accept the new cpu, but thats not really possible!!
i accept any advices!
thank you very much!!!
[JLA]