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).

I couldn't help it!!!. I was at morpheus. Searched under software and there was a TON of free plug-ins(practically everything) for the pc. Nothing for the MAC. Not a problem, I would sacrafice buying everything for the MAC, instead of using the free stuff for pc. MAC is just better for audio production, HAND DOWN..... The only REGISTERED software I have is Cubase VST 5, Waldorf Attack, Steinberg Model-E. I contacted steinberg about possibly trading platform software for cubase. It would cost me $159 for mac version and I would have 30 days to return pc version. Or just purchase the mac version for half price and have them on both pc and mac. I was thinking of keeping Cubase VST for the pc and purchasing Logic Audio for the MAC. But that would be ANOTHER sequencer that I would have to learn to use. I just starting learning Cubase about 2 months ago. Before that all production was made with Cakewalk PA9(Mastered this one). Alot more precision can be accomplished with Cubase, Logic, DP, ProTools, ect. Cakewalk is very easy to learn, but doesn't get into detail like the vst sequencers. What would your thoughts be on using 2 different sequencers on 2 platforms. Or would it be better for me to have cubase on both pc and mac?. Better stop here I am writing tooooo much...Your thought Please!!!!

Nova