Here is a list of some of the tips & articles from my other site WinVistaClub …
Most or all of them apply to Windows 7 too, and you may find some of them interesting.
Troubleshooting System Restore In Windows Vista & Windows 7
Disk Management & Partitioning Guide
Troubleshooting Windows Update
Guide : Customize Windows Vista System Restore Options
The Secret Of The WinSxS Folder
De-Mystifying Windows Vista & Windows 7 Registry
Managing The ‘Temporary Internet Files’ Folder in Windows Vista & Windows 7
The Enigmatic Cookies Folder In Windows Vista & Windows 7
Understanding The “Other” Version of Windows Vista Chkdsk Utility
5 Tools for Managing Windows 7 & Vista Firewall.
Cheers! 
If you have liked this post, you might want to check out some more, on topics like WVC.
