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Popular Windows maintenance and system optimization utility suite Advanced WindowsCare Professional is now Advanced SystemCare and is available for free, the new avatar of the software suite completely replaces the old interface with a brand new smart and easy to use practical interface.

Advanced SystemCare Free makes use of the popular one-click system maintenance approach to repair, clean, protect and optimize your Windows PC providing better speed and reliability.

If you want to create a Live Ubuntu USB key from Windows, free utility Usbuntu does the job perfectly, but if you are looking for an advanced utility having the ability to create bootable live USB drives from a variety of Linux distro's UNetbootin would be the solution you are looking for, the free and open-source utility for Windows and Linux allows users to create bootable Live USB disks for a variety of Linux distributions, the utility can download a linux distribution of your choice or can be supplied with a Linux .iso file if you've already downloaded it or if your distribution of choice is not included in the list.

If you don't have a USB disk or can't use it for some reason UNetbootin can install on your Hard-disk as a Frugal Install which can come handy for loading system utilities like - Parted Magic, Super Grub Disk, Backtrack, Ophcrack, NTPasswd, Gujin, Smart Boot Manager (SBM) and FreeDOS to name a few.

I have blogged about how to install Windows 7 as a virtual machine for a risk-free trial, Similarly, if you are willing to try one of the best Linux desktop distro "Ubuntu" without risking your existing Windows install here's a short, simple and easy to use GUI utility to create Ubuntu Live USB with ease.

uSbuntu Live Creator is a free software for Windows allowing users to create bootable USB key with Ubuntu 8.10 on it, and the best part is that the software also offers an exclusive option of automatic virtualization using portable VirtualBox for launching Ubuntu directly in Windows without any configuration or installation.

Microsoft Windows 7 is still in preview stages but has already gained quite a substantial amount of users trying its first beta, if you are willing to try the new beta without taking any risk with your existing computer configuration, installing it on a virtual machine is the best option, the whole process is very safe and takes around 40 minutes to get completed on a decently powered P4 computer.

A virtual machine installation lets you try Windows 7 inside your existing OS as a guest operating-system, Both Microsoft Virtual PC 2007 and Sun VirtualBox can be used for this purpose, I will be using Sun VirtualBox for this demonstration.

1. Download and install Sun VirtualBox if not already done.
2. Download and obtain a license key for Microsoft Windows 7 Beta using instructions provided in the earlier post here.
3. Now launch VirtualBox and click the New button to start setting up our Windows 7 virtual machine.