overclock amd athlon 900MHz over 1.05GHz questions

I have a...

amd 900MHz@100*10.5(1.05GHz)
voltage(jumper setting)@1.775/1.80V(MBM 5 says 1.84v)
temp@46 C Idle(I say this as I know that MBM 5 reports a +3 C(49 C) from the real temp)
a7v133 mobo
256 pc133 sdram
vantec cpu heatsink(with a delta 7000rpm fan)
asus v7700 GeForce2 GTS
300watt macase with 8cm intake and outtake fans
Win98SE

...my questions are:

1. I've tried oc'ing the cpu further to 133*8(1066MHz) using the same voltage...it boots fine but during the first few seconds of a UT game, there is a directX3d error (I can duplicate it easily).
Do you think the 133MHz FSB poses a major cause to my asus v7700 (as the FSB setting afects all components attached to the mobo) or is it just because the athlon 900MHz cpu can't break 1050MHz stabily?

2. If I changed the voltage jumper to 1.825/1.85v will my athlon 900MHz cpu be stable enough to break the 1050MHz barrier?

Any real life examples at oc'ing an athlon 900MHz cpu past the 1050MHz barrier would be great!

I'd appreciate any feedback on my current oc config as it is my first attempt at it (especially the temp reading, just a bit worrying), thanks.