Lock Any Folder In XP without Using any software in just Few steps.

To Lock a folder in windows XP without any software. Follow the steps Below.

1. Make a Folder in C drive rename it as "abc" without quotes. 
2. Now open Command Prompt from Start Menu.
3. Type "attrib +s +h C:\abc" without quotes and press enter.
4. This command will Make your folder invisble and it can not be seen even in hidden files and folders
5. To make it visible again type "attrib -s -h C:\abc"
6. You can lock any other folder also by changing the   location C:\abc to address of your folder.

How to Increase Virtual Memory (Virtual RAM) By Using Hard drive?

 To speed up your windows or to increase RAM virtually,
Right click on My Computer 

>> Properties
>> Advanced
>> Performance - Settings
>> Advanced
>> Virtual Memory - Change 

Keep the initial size same as recommended and maximum size double of it then restart your system.
It will improve speed of windows and you can play some games which require higher RAM.