Thankyou for the input and advice. I hope more will come soon (especially from Australians with similar experiences!).
I think I should be alright if I apply myself to whatever I'm doing, of course planning that is the easy part. Doing the hard work day to day is much more difficult.
To give a bit more information out, the courses are not at the same university I'd be studying at. Which is sad, but hey what are you going to do? I'm sure as hell not doing science at my current uni again! Worst. Lecturers. Ever. Amongst other resource problems.
Additionally I have heard of courses similar to those 'foundation' degrees or courses. The problem with those (for me) is time. From what I've seen they're very solid sources of information and practice, but take 6 to 12 months to complete.
I'm looking at doing this stuff over the (rapidly approaching!) summer period here so that I'll be ready for semester 1, 2009's late offers. The uni I'm going to won't actually let me in without these skills in the first place, so it's going to be a very tight squeeze to get in.
Hope that's not too much rambling! I'm excited about it all but fairly worried. I mean, I'm pretty bad at math and I want to do physics? Ergh. Well, perhaps that's an unfair assessment. I'm pretty uneducated when it comes to math, and out of practice because of that/a lack of use in daily life or course work. I don't think I'm actually bad at it, hell, I could do calculus at some point... A long time ago in a galaxy far, far away.