When I downloaded the new launcher, I copied all the files from .minecraft to my USB flash drive including the new launcher. I then copied everything to my Dell Dimension XPS B600r and placed it in:
"G:\Documents and Settings\myusername\Application Data\.minecraft"
Do not comment on the directory or drive letter. G:\ has been the default drive since I ran Windows setup back in 2006, and this is the correct directory for Windows XP.

When I tried loading the launcher it gave this message:

"Bootstrap (v5)
Current time is Jan 15, 2014 7:37:32 PM
System.getProperty('os.name') == 'Windows XP'
System.getProperty('os.version') == '5.1'
System.getProperty('os.arch') == 'x86'
System.getProperty('java.version') == '1.6.0_01'
System.getProperty('java.vendor') == 'Sun Microsystems Inc.'
System.getProperty('sun.arch.data.model') == '32'

Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 2/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 3/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 4/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 5/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 6/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 7/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 8/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 9/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Downloading: https://s3.amazonaws.com/Minecraft.Download/launcher/launcher.pack.lzma (try 10/10)
Exception: java.net.UnknownHostException: s3.amazonaws.com
Unable to download remote file. Check your internet connection/proxy settings.
FATAL ERROR: net.minecraft.bootstrap.FatalBootstrapError: Unable to download while being forced
at net.minecraft.bootstrap.Bootstrap.execute(Bootstrap.java:95)
at net.minecraft.bootstrap.Bootstrap.main(Bootstrap.java:381)

Please fix the error and restart."

Why is it trying to download this same file over and over while I'm offline? This computer isn't connected to the internet, so it saddens me that I can no longer play updated versions of minecraft.
The old launcher worked great, but now I can't play a newer version then 1.5.