Thanks heaps effbee05 and pezzar for your replies, much appreciated

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Ok, after a little more reading/searching today I have discovered the following about my setup, and what I propose to do to edit my bios. Would love to know if it's the correct method before I do it, to prevent possible implosion etc.
OK my setup: XBox v1.6 (Kernel 1.00.5838.01), SmartXX modchip using EvoX M8 bios and the latest version of the EvoX dash I could find, v3935.
I'm going to aquire a copy of the EvoX M8 bios (.bin file) from the "usual places", which I plan to edit with EVTOOL, then copy it into my 'BIOS' folder found on my Xbox's C drive and then use the 'FLASH BIOS' option present in the EvoX dash.
Hows that sound?
I hope that's right!
Anyway, I would love some feedback.
Thanks heaps guys.