Any way to enable 4x agp on this board???

[DragonBreath]

Hello and thanks in advance.
I recently sold a friend of mine a gf3 ti200 128mg. I ran this card for over a year in my current system described below. So I know it will run at 4x agp.
His system is as follows,
900Mghz amd Athlon
pcchips 810L w/ sis730s chipset, wich does support 4x agp
256mg ram @ 133
onboard cmedia sound
40gig wd hd
350 watt psu
WinXP Pro

Now all I can get this video card to run at is 2x agp. I have been into the bios, there is no entry to adjust the aperature size.
All I can find in the BIOS as far as the video goes is initial display and that gives me the pci and onboard agp option, I tried both to no avail.
I have also installed the agp slot drivers from pcchips, updated the chipset drivers and looked in the registry for anything that may mention agp and came up with nothing.
I do have the mobo manual and there is no mention of a jumper to disable the onboard agp and I also looked on the mobo and did not see one. The only thing the manual says about using an agp card is to make sure the drivers for the agp slot are installed.
So all and all I am at a total loss as to how to get this card to run at its full potential, as much as it can on this board anyway.
So if anyone has any ideas or suggestions please let me know.
Thanks again,
db

[morriswindgate]

Lots of Luck > Copied from the PC Chips website for this board.

Notice for AGP4X Slot:
This mainboard provides an optional AGP4x slot. We recommend the user should use one of the AGP VGA cards that we have tested. We will test more AGP VGA cards in the future.
And this is the ones tested by them:

RIVA TNT2
32M
ASUS AGP-V3800

NVIDIA RIVA TNT2 Vanta
32M
Top solution

Matrox Millennium G400
32M
Matrox

GeForce 2 GTS
32M
Winfast

GeForce 2 GTS DDR
32M
MSI MS-8815

GeForce 2 GTS DDR PRO
64M
ELSA GLADIAC

GeForce 2 GTS DDR PRO
64M
GIGABYTE GV-GF2010

GeForce 2 MX
32M
ASUS AGP-V7100

GeForce3 DDR
64M
ELSA GLADIAC 920