|In addition to #14 you will lose all the software that may have been bundled with the Win2000 installation. Things like Works or Office for instance.|
Run the Windows 7 compatibility check to see if your computer meets the requirements. If so, an upgrade should keep all or most of the original software. Burning software may not work anymore for instance.
Either way, you are going to have some issues.
What is making you so fed up with Win2000?
If anyone knows the above to not be true then please speak up.
If your only concern is the re-installation of software then there are ways around that after setting up your hard drive properly and slipstreaming SP4 & the rollup.