basically they are the same thing: compression extensions. but u need a compression manager such as WinRAR to extract the files from the .rar file. You can download winrar for free(free private use, not for commercial use) at their website which i believe is
after you download and install that, winrar will handle lots of other compression types such as .zip, .uha, and others.
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Running+Computers=My Life
Desktop Computer:
Asus Motherboard
AMD 64 2.4Ghz
Memorex 16X DVD+-RW
160 GB Hard Drive
1gb SDDR RAM
256 Diamond Stealth Video Card w/ Raedon technology
5.1 Channel Mad Dog Sound Card
Windows XP Pro SP2 partition one 80 GB
SuSE 10.0 Professional Partition 2 80GB
Don't use my desktop anymore, now i just use my laptop i just got from ebay lol...
Laptop:
Intel PIII 1.13Mhz
DVD/CD Drive(no burner)
16mb video card
30gb HD
256MB RAM