There are two ways to password protect a folder built into Windows XP (for other Windows flavors, there are some freeware/shareware programs out there).

Method 1:- If you have a log in password for your account, this can be used to protect folders from other users. Your hard drive must be formatted using NTFS (which it probably is unless you're dual booting with another operating system). Here's what to do...

Right-click the folder that you want to make private and choose "Properties" (or Alt+Double-click). Go to the "Sharing" tab and check the "Make this folder private" box.

Installing Tiger involved quite a bit of work, and may have taken someone with advanced knowledge of computer software an entire weekend to perfect. Drivers were hard to come by, and it was largely luck of the draw if you were able to get your particular hardware to work with Tiger. Leopard was an evolutionary step forward, automating much of the process and having great compatibility with PC architecture. More modern devices are supported automatically, both through default Leopard software, and from the lovely folks who compiled these hacks in order to liberate OSX for the masses.

This was mostly accomplished because Leopard was meant from the beginning to be used on computers with the x86 Intel architecture. The roadblock keeping OS X from naturally running on any pc is something called EFI, or Extensible Firmware Interface. The EFI that Leopard uses is only tooled to work with Apple hardware, which means that it needs to be patched. The original method of patching was to use a thumbdrive attached to the computer and utilize the terminal to transfer files from the thumbdrive to the operating system files of Leopard. Compared to installing Tiger onto a PC, this method was ridiculously easy and was all that was required to have a successful boot of Leopard. But a better solution is now available, one where no thumbdrive is required and installation is streamlined and so easy that nearly anyone can do it.

Multiple login in yahoo Without Using any Software You can login with multiple id’s on the same yahoo messenger without any download or patch .

1.Go to Start ----> Run . Type regedit, then enter.
2.Navigate to HKEY_CURRENT_USER --------> Software --->yahoo ----->pager---->Test
3.On the right pane , right-click and choose new Dword value .
4.Rename it as Plural.
5.Double click and assign a decimal value of 1.
That's it done!!
Now close registry and restart yahoo messenger .For signing in with new id open another messenger.