You have several options to do in order to break 10k points.
I had one ATI built retail Radeon 8500 275/275 about 4 months ago.
I have the experience with this card. It doesn't help much after OC it to 300/300, only about 300 points gain.
but
check this out first
http://service.madonion.com/compare?2k1=3808986
10064 points on 3dmark2001SE
See the tricks now?
First those pp above are right about OC your processor. Mine was a 1.8A northwood, it was running at 2.547GHZ, so if you can overclock your processor(your 2.4B should be able to reach 2.8 to 3.0GHZ), then you surely will get 10k+, probably 10.5K+.
(for determine my point of how important CPU power is, see this
http://service.madonion.com/compare?2k1=3487990
It's the same card I had, but on a different system.)
Second thing for you to do is------upgrade to WinXP. I've noticed the WinXp driver for 8500 is way better than Win98.(i see you have Win98) I gained about 400 points by doing that alone.
Another thing for you to do is-----what's your CPU:RAM ratio? Better set to 3 : 4, and for Ram timing, try as fast as possible. I used 2-5-3-3.(i had to use that 3-3 instead of 2-2 because the RAM cannot handle it after that extreme OC to FSB, i had Corsair PC3200)
So try all 3 things I suggested, you may be able to get 11K+
good luck
(here is my currect highest score after i replaced 8500 with Ti4200
http://service.madonion.com/compare?2k1=4344647 )