1) Is it true Macs don't generally get viruses?
Yes
2) Is it true that Macs are really reliable and last longer than PCs?
Macs are EXTREMELY reliable. I have four 'Classic' Macs, and they are all older than ten years. Each and every one of them starts up, does what I want it to do, and then successfully shuts down
3) Do you ever get those stupid popups that Windows gives you about "a problem has occured and now Win has to shut down this program"
Stupid pop-ups? No. "Internet Explorer has Unexpectantly Quit. The system and other applications have not been affected" pop-ups yes, every once in a while (but only when you're running anything microsoft based
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4) If I were to get Virtual PC for a Mac, would I be able to then run my Win version of Photoshop on a Mac, or would I need to use the Virtual PC Windows edition?
Cave, and buy the Mac version of Photoshop. Photoshop CS is optimized for the G5 and I think it would be a great asset.
5) Is it true that Macs eat alot of RAM?
YES! You should never use a Mac with less than 256 mb of RAM. I even consider 256 mb an obsolete amount and suggest not using anything less than 512mb. Considering the fact that the system uses 128 mb of RAM or less, and the fact that Photoshop uses however much you allot it to use (the default is 50% of available RAM) That just leaves photoshop with 64 mb of RAM , and for serious work, that's a joke. And if the system needs to back off the RAM, it will begin to use Virtual Memory. And this slows your entire system down to a crawl. So, in essence, the Mac does use a lot of RAM