I love when you can make the preview better. I use that a lot! 

Windows Explorer, the default file browser of the Windows operating system, can display previews for select media files right in its interface. This only works for select display modes, and select file formats. While you may see preview thumbnails for wmv or mov files, you won’t see previews for other popular file formats such as flv or mkv.

A lack of supported formats make the feature less usable than it initially appears. Another issue that some users may have with the default media previewing is that it usually captures the first frame of the media file and turns it into the thumbnail shown in Windows Explorer. That’s a big issue if multiple media files start the same. This is for instance the case if you have ripped a season of your favorite TV show from DVD to your computer.

While those are the two most important issues you may experience in Windows Explorer, you may have also encountered smaller issues, like black thumbnail previews, or the inability to rename video files in Windows Explorer, even though they are not used by any visible process. 

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Cool...

In Windows 7, you use shared folder permissions to configure who has access to your folders and specifically what type of access they have. For example, you can give an individual or group access to a folder but only give them Read access, which means they can’t make any changes. The specific shared folder permission you can set includes:

Read: Lets the group or user read the contents of a folder or file. However, the user can’t modify those contents in any way.

Change: Gives the group or user Read permission and also lets them modify the contents of the folder or file.

Full Control: Gives the group or user Change permission and also lets them take ownership of the resource.

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I'm not sold on "the greatest" but I can say, it's a decent list with all the problems either being solved there on the page or, they point you in the direction you need to go to find your answer.

PC owners know that every computer has a unique assortment of components, applications and peripherals. Nevertheless, certain things--including a host of common PC problems and mysteries--are part of the shared experience of computer ownership. The editors at PCWorld have seen and solved hundreds of PC mysteries, ranging from balky printers to diffident video players to persnickety file attachments. Most of the answers to these tech questions are simple and straightforward, so we've taken the liberty of compiling some of the most frequently encountered PC mysteries into a single list that we'll update regularly. Following each question we provide a short response that summarizes what we know. For a more detailed explanation and some helpful tips, click the links in each answer.

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Oh yeah... new OS.. new Powershell. Bitchen Boss-O Man! 

Windows PowerShell 3.0 is just around the corner. If you've downloaded one of the Windows 8 previews, you've been able to kick version 3 around. Or you can download a beta candidate from Microsoft.

PowerShell is actually just one piece of the Windows Management Framework that will also include remoting technologies such as WinRM and Windows Management Instrumentation (WMI), which has a few enhancements of its own. More on those in future columns.

If you are installing 3.0 on Windows 7 or Windows Server 2008, at a minimum you'll need .NET Framework 4.0 installed. There may be a few other requirements, so be sure to check the notes on the download site. We're still pre-RTM so things might change. 

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