The first thing you should be aware of is that none of your Windows software will work with the Mac. This really has nothing to do with the PPC/Intel thing, it is all in the way the program was written. There is no blurring of software for the Mac, it was either written for the Mac or it wasn't. The Intel processor has no bearing on that.
VirtualPC, now discontinued by MS, would enable you to run Windows on that G4 but it is very, very slow. VPC emulates, not virtualize, a Pentium II with speeds up to 650Mhz depending on your G4 processor.
You might want to consider not getting the G4 and going for one of the MacBook machines. They are a much better option than the G4 and will be capable of moving past the current OS, Tiger, to Leopard and beyond. (Sounds like a Buzz Lightyear saying). Tiger will run happily on that machine, more memory will always help, and as you know this machine will go to 1.25Ghz.
Trillian appears to be a Windows only application but I'm sure others will chime in with a replacement for it.
Hope this helps to start you off
P
Hey Everybody
I have been a strict PC user my entire life sticking with Windows and ocassionally Linux. I'm basically as close as you can get to being Microsoft certified without being actually certified. However I have used Mac on a few short occassions not enough to be considered even a novice user. However my curiosity has peaked and I want to jump in and see what these pc's can really do, so I can have a more open mind to how different systems are and how well they perform.
Thus I am selling my 4 year old compaq system so I can buy a used yet good condition 12 inch Powerbook G4, with a 1.0ghz processor, superdrive, and 256mb of RAM which I will personally upgrade to a gig and and quarter, to at least try and get tiger on the system. This however is a big decision for me, and the biggest worry I have is with software. With the new intel based systems software issues are becoming blurred for an Apple, so I concerned about the functionality with a PowerPc processor.
Will my software work with a G4, is there a program that apple offers on any other developers offer that is similar to Rosetta, where instead of PowerPc Software being configured to run on an Intel chip, Intel/Windows based software can be ran on a G4 chip? Does Mac play well with Windows if I create a presentation similar to Powerpoint on a Mac can I run it on a pc? Will Virtual PC be able to run on the mac so I can I have a virtual Windows machine? Will software like trillian work on a Macintosh? If anybody can answer these questions as soon as possible I would be really gratefull. NAd I can promise I have many more.

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