What is the difference between Standby, Hibernate, and Sleep? I understand from reading these forums that Standby and Hibernate do not work well on desktop computers. What about the Sleep function?

aps
Dell Dimension 4100
Windows ME
1000 megahertz Intel Pentium III
BIOS Version 8
128MB 133MHz SDRAM
32MB NVIDIA TNT2 M64 AGP Graphics Card
20 GB ULTRA ATA-100 HARD DRIVE
V.90/56kTelephony Modem
12X DVD Rom
SB Live!
Altec Lansing ACS340-Speakers
100 MB Zip Drive
IE Version 6
Outlook Express Version 6
Zone Alarm Pro Version 3
Cable Modem