Using PC plugins on a Mac....HELP!!!, Can I use VST PC Plugins on my new G4 Options

I just purchased a MAC G4 Dual 450/640mb, ect. I also have a pc with a SHITLOAD of PLUGINS.
For Example, Native Waves GOld Bundle, Time Bandit, Orange Vocoder, Tc Electronics Plug-ins, Bitheadz Pharazer, Native Pro52 model synth, Tons of VST/ DirectX plugins, Waldorf Attack, Steinberg Model E, Alboretu-Hyperism, Steinberg Mastering edition, Waldorf PPG Wave V2, Prosoniq Time Factory, Ect. I would never have enough room to list them all.
I am using Cubase VST 5 for sequencer. I know I will probably have to buy the Mac version for cubase for it to run on the mac, because I don't think the pc version will run on the mac. My question is if I buy the Mac version of Cubase could I use all of these plug-ins with the mac version of cubase just by transferring the plug-ins from my pc to my mac. Or is there a seperate version(mac and pc) for these plug-ins.
I though that plug-ins can be used on either platform as long as the sequencer that is using them is for that specific platform. If you can help with this question in any way I would greatly appreciate it. I would hate to have to buy all new mac versions of these plug-ins(over $5,000).

Well at least you are honest Nova, at least you have a licence for Cubase, most of the PC users I know don't even have that.

You are (fortunatly?) having the same dilema as me, what sequence to get for the Mac. At the moment my funds will not stretch any further so I m sticking with ProTools until I can afford something, but then again I mainly deal with audio. Anyway I was thinking if I got Cubase for the Mac (just the normal one) then I could transfer stuff between my Mac and PC (The PC is a latptop so I could have a portable studio). However when speaking to the guy at a shop about getting a Mac and suggesting getting Cubase, he suggested against it and told me Logic would be a better buy, I explained the cross platform thing but he said that Logic would be better, also seem the general advice from most Mac users, get either Logic or Digital Performer.

Hope this helps.

Lee