I have an older Mac OS X version 10.5.8 with 2.1 GHz PowerPC G5 and 1.5 GB DDR2 SDRAM memory. I want to run Windows 7 on it. I don't think I have Snow Leopard and I don't have Boot Camp. 1) Can Boot Camp be installed? 2) Then do I have enough RAM to install Windows 7 using Parallels 5.0 for Mac? I'm not very computer savvy with Apples.