Memory timings using Crucial ballistix PC2 5300 DDR2

[getcarter]

I am using an MSI P6N SLI 650i Platinum motherboard and the timings for the Memory are all set to auto giving me some really bad settings in CPUz and i would like to change these.
My problem is as they are all set to auto i have no idea which is which and was wondering if anyone could give me a hand or point me in the right direction.

These are the settings for memory in my bios below,
tCL [AUTO]
tRCD [AUTO]
tRP [AUTO]
tRAS [AUTO]
tRRD [AUTO]
tRC [AUTO]
tWR [AUTO]
tWTR [AUTO]
tREF [AUTO]
CMD [AUTO]

 

[getcarter]

so you reckon i should up the volts to 2.2v on the memory? Would this also make those settings you just stated more stable?
Also as u stated the first four are the ones that matter should i not bother with the other ones?

Thanks for the help!