well i guess for the usb one see if the manufacturer has a osx installer? and as for the laptop if it's centrino then your wifi is intel and not supported in that case you need to buy one that works in osx. like a broadcom card
well if you ever decide that the d630 will be your main machine and still have the d620 high-res screen, the lids/screens are interchangeable but you need to also swap the ribbon. cheers.
ok so the flags worked for you good... now do you have intel wifi? if you do it tends to lock up boot... shut it off in bios or remove it if it's intel for install.
you can try the generic myhack 3.1 extra with the flags npci=0x2000 cpus=1 if you use the new chameleon in 3.1 i believe it detects pciroot if not also add pciroot=1.... EDP and myhack will be integrated shortly...
well there are 4 different d630 models actually there are more... which one do you have there are gma crestline video, then nvidia, then each has a high and low res counterpart.
you probably need nullcpu.kext and might need to shut off speedstep in bios. untill you can extract your dsdt. also try the newest chameleon you can get thats based off trunk.
if you can boot with -v -s then you can use terminal if you know how to. worst case scenario you have to reinstall osx on top of the old one it should save your files
try using my hack 3.1 with generic kexts and see if that gets you further it will be an option during a my hack build.... you might have to boot with -v cpus=1 at the chameleon prompt