Go to control panel -> ease of access center and click the "Change how your mouse works" link, and scroll downto the "Make it easier to manage windows" section. Check the box that says "Prevent windows from being automatically arranged when moved to the edge of the screen".
System Manufacturer/Model Number Dell Dimension 9200 (XPS 410) OS Windows 7 Professional x64 CPU Intel Core 2 Quad Q6600 2.4Ghz Motherboard Intel P965 Express Chipset - Dell Inc. 0CT017 Memory 4GB - HYMP512U64CP8-Y5 Graphics Card nVidia GeForce 8600GTS Monitor(s) Displays DELL 22" E228WFP Screen Resolution 1680x1050
Keyboard Logitech Cordless Desktop MX3000 Mouse Logitech Laser Mouse MX3000 Hard Drives 2x Western Digital WD3200AAKS
Intel Raid 0
Seagate Expansion 1TB - External Other Info Phoenix ROM BIOS PLUS Version 1.10 2.5.3 - Dell Inc.
Broadcom 802.11g Wireless Network Adapter
Sony Optiarc DVD RW AD-7241S
Lite-On BD-RE iHBS112
TEAC CA-200 19-in-1 Media Card Reader
HP Photosmart 8450 Printer
System Manufacturer/Model Number Dell Dimension 9200 (XPS 410) OS Windows 7 Professional x64 CPU Intel Core 2 Quad Q6600 2.4Ghz Motherboard Intel P965 Express Chipset - Dell Inc. 0CT017 Memory 4GB - HYMP512U64CP8-Y5 Graphics Card nVidia GeForce 8600GTS Monitor(s) Displays DELL 22" E228WFP Screen Resolution 1680x1050
Keyboard Logitech Cordless Desktop MX3000 Mouse Logitech Laser Mouse MX3000 Hard Drives 2x Western Digital WD3200AAKS
Intel Raid 0
Seagate Expansion 1TB - External Other Info Phoenix ROM BIOS PLUS Version 1.10 2.5.3 - Dell Inc.
Broadcom 802.11g Wireless Network Adapter
Sony Optiarc DVD RW AD-7241S
Lite-On BD-RE iHBS112
TEAC CA-200 19-in-1 Media Card Reader
HP Photosmart 8450 Printer
window maximizes when it touches the top of the screen... :( problems?