Recording with Mac Questions

[Johnny]

Hi there,
I've a mac powerbook and that's what I use to record, plus the M-Audio Duo and the AKG C-1000S mic. I use the Bias Deck 3.5 program to record.
My questoin is: are there any pluggins or so, like a Tube Emulator for my program? Or any cool things you would recommend me?
Cause I know of many cool pluggins for Pro Tools, but PT is only good with the hardware, which I don't have, in my opinion.
Do you have any recommendations? I would highly appreciate any help you could give me.
Johnny [img]images/smilies/rock.gif[/img]