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My favorite and most often used utility is PowerDesk. It is a sort of Windows Explorer, but much better, easier to use and with many included options, such as ftp, zip, selective printing, searching, ... as well as an optional horizontally split double window where I can view an image or text in a document, scrollable, before I need to go to the trouble of actually opening it:

You can do a free fully functional download of PowerDesk but, being a software developer and appreciative of the time and effort it takes to write good software, I believe in registering and paying for any shareware I like to use. Here is a screenshot downloaded from the illustrated tour on the website -- for multimedia clips for Blackboard and the web, where the option to include a media clip without a path is necessary: 

For information, tour, download, see http://www.pcworld.com/downloads/file_description/0,fid,3491,00.asp

An alternative essential utility is for zipping / archiving: You can compress one or more files at a time, with impressive rates in reduced filesize, for backup storage on a backup disk, or for e-mail or a website or Blackboard.
When you need them again, the same utility lets you unzip/uncompress the zipped files. The recipient of your e-mail or user of your web based zip file needs unzipping software to unzip your zipped file.
A student in your Bb course does not unzipping software: Bb will unzip the file when clicked on -- provided you uploaded it with the correct instruction for a packaged file.

There are many packages available, some free, some are shareware: you download, test, and then buy for a very reasonable price.
See http://www.pcworld.com/downloads/file_description/0,fid,6383,00.asp

PowerArchiver and PowerZip are excellent, as is Winzip. As Winzip seems to be a popular choice at Lehman,
here is an illustrated guide to using a Windows utility (here WinZip, a free download for testing and a small amount for registration and purchase of the pro version) to package one or several files into one, such as one html file with images, or a collection of images, or a PowerPoint demonstration, or a datafile --
zipping or archiving a file reduces its file size, especially when its a datafile, and therefore the time for downloading (to a computer) or uploading (to another computer). It is recommended for e-mail as well as for the web. You can easily upload a zipped file to Blackboard with the instruction to unpack the file, and Blackboard will automatically unzip the file and display it.

Using WinZip

Get winzip90.exe from Download.com - Free downloads, shareware, and more

Download it into a folder, such as c:\My Programs\winzip and double click the exe file to install it there on your computer.
Please note that this is shareware, and you should pay for it if you decide to keep and use it. The developer of the program deserves to get paid.

You can opt for the classic or the wizard interface during installation. For this guide, I chose to illustrate the wizard interface.

Open Winzip and you will see the following screen:

      Here, click on Options to get the following screen:

     Here, the image shows the folders on my computer; the folder list on your computer will differ. Select or add the folder that contains ALL the files you want to package into a single zip file. If the folder is not listed, click on Add a folder to list -- to add the folder to the list shown. Click OK. If the folder that contains ALL files you want to package into a single zip file was not automatically included into the list of your favorite zip folders, you can click on Other Zip Folders and select one of the options shown below.

     Click on one of the trhee options to select it, then click OK.

     After clicking on Default Unzip Folder, accept the default (c:\unzipped)--
or click Browse and change to a different location on your hard disk, then click OK.
Why? Whenever you receive a .zip file and unzip it, its contents will appear in the folder you choose here. Please copy the unzipped files into the folder where you want them, then delete them in the Default Unzip Folder, so it is ready for the next batch of files from a zip file.

    Clicking on the Misc tab produces this screen. Here you can choose either Wizard or Classic interface and some additional options. Click OK when you are done with your selection.

  Clicking Next on the previous screen gives you this screen:

  Select what you want, and click Unzip Now, and/or Close.

Ursula Hoffmann, April 2005, Winzip v. 9.0