Need some help/advice on ocing my Q6600

i believe i have the older b3 or whatever its called stepping instead of G0 so im told it runs a bit hotter.. i have the tuniq tower by the way

on speed fan:

system: -3c (why the strange temp?? can somone explain this to me)
cpu: 39 (is this ok seems a bit high to be quite honest since the tuniq tower is about equal to the thermalright ultra 120...
AUX: 44c (idk what AUX is so is this alright?)
core 0: 31
core 1: 30
Core 2: 28
Core 3: 27

at only %25 cpu usage i get these temps:
cpu: 51
AUX: 45c
core 0: 41
core 1: 37
Core 2: 37
Core 3: 37

and when i overclocked to 3Ghz i get these as idle temperatures:

system: 6c
CPU: 47c
AUX: 46
Core 0: 36
Core 1: 35
Core 2: 35
Core 3: 33

ok i also had a question about memory and weather or not i should run it at 1:1 or auto...

*ok i tried to boot at 1:1 which meant i had to put FSB memory clock mode to link instead of unlinked and when i tried to boot i got this one long continuous beep so i have no idea whats wrong.. and to be quite honest i nearly had a heart attack when i heard that beep.. so please any help would be much appreciated, thanks

*haha and now lol i cant even boot up with 3Ghz, because my ram goes to 1333 or something like that... what should i set it to?? 800 or something?

Set BusSpeedRAM to 1:1. Keep the latencies the same.