2 bugs to work out

SO I've got everything done on my unattended except for 2 little glitches.

One is the computer name. If i set any name, it is fine but what I want is a random generated name..if I put in a *, like xp, it generates an error and doesnt parse the autounattended file

Second is changing the power plan on vista. Tried with this [HKEY_CURRENT_USER\Control Panel\PowerCfg]

"CurrentPowerPolicy"="2"

but it seems to have no effect. I can change that number to anything and it does not change a thing in vista's power options. Another thing, vistas power options only show 3 options with certain names, and if you navigate to that key above, it doesnt mention any of them...it lists the xp ones which again seem to have no effect changing them in any way...so my question is, where is the REAL registry key that holds vista's power options? and why the heck does vista have these values in there if they arent actually part of anything?

Thanks,