Alrighty,
I have an Acer Extensa 5620-6266 , 250gb hdd, 3gb ram, Core2Duo processor, and it's currently running Vista Premium SP1 ...

Is there anyone here who has set up an Extensa to Dual-Boot before ???

I want it to boot with Windows 7, and OSX 10.5.6 ... but if that's not possible, than Vista Ultimate, and OSX 10.5.6

What will I need to do the job?
Any suggestions?
Length of the job?
Any guides ??

Thanks guys

Did you check in the HCL? check the FAQ for more info, please post your full specs to help you (no links)

Full Specs :

Acer Extensa 5620-6266
T5550 1.83ghz Core 2 Duo
250gb HDD
3gb Ram
667mhz data bus speed
Intel GM965 Express chipset
2mb L2 Cache

I don't know what else you might need?!? But that's the specs I got....

I watched this video, and the guy is using:
YouTube - Acer Hackintosh

I used iAtkos v1.0 r2 (used minimal settings, darwin 86 bootloader)
Then installed the Kalway 10.5.2 update
Then PCCard 10.5.2 beta

It appears these don't work:::

Trackpad scrolling
Headphone input
s-video
sd card
sleep

Anyone know a workaround for those??

Try updating to 10.5.5, whats your audio chipset? you have to get full QE/CI support with your video card to get S-video, please google a bit to know how to fix the sleep issue, there lots of solutions