Free plugs for ptle are few and far between. And the ones that are out there really suck arse. I think of all the searching I've done I found one plug by izotope and a few chorus/flanger things that really butcher the sound. Honestly there just isn't much free stuff out there. However if you have pro tools 6.4 or higher you can get eq3 and dynamic3 for free. I love both. One time I had a crucial mix to do, the band did three songs in 3 days and wanted it "great sounding", so I downloaded the demo's for mcdsp and used them, top notch. Also try out wave arts plugs, I demo'd then bought every one, well worth it, trackplug5 alone is phenominal.