With that kind of help I think he might thing that the mac community is full of virii and difficult to use.... like windoze.
To the original thread starter: What do you want to do on your new computer?
If the answer is "Play all the cool new video games"... get a PC. Macs have some games, but not as many as the PC.
If it's ANYTHING else, it will be easier and simpler on a mac. Office, Surfing, Music, Video Editing, Pictures, sound, digital studio...etc... and 99% of the time it's all fully compatible with the PC counterparts.
They just work better..... they don't crash ... they keep running.... they don't get virii, they stay fast (don't slow down), and are just reliable and simple.
If you want to play a lot of brand new computer games - get a PC, and it will do it for cheaper...
...or do what I did. Get a Mac, and have a PS2, N64, Atari, Intellevision, Sega Nintendo, and SNES for your game playing fix.