List of tips for current Windows Operating Systems (Classified as applicable to XP, Vista or both):

How to enable Auto-login for Windows Vista (Vista)

Suggested maintenance and security measures for internet-connected PCs (XP & Vista)

Download links of important, Undistributed Windows Vista Hotfixes (Vista)

Suggestions for Building / Deploying new Dell Vostro Desktop (Windows XP Professional)

How to cascade two Linksys Routers (in either single DHCP or dual, child-parent DHCP configurations)