Suggest me a free software to clean the registry of my PC.

Here is my top 5 Free Registry Cleaners.

1. CCleaner
2. JetClean
3. Wise Registry Cleaner
4. Registry Repair
5. Easy Cleaner

How to remove junk files from my computer?

There are few windows utilities available. But I'd suggest a free Disk cleaner, which is free and effective.
Usually junk files appear as a result of program's incomplete uninstalls, or Temporary Internet Files. At some point, these files use a considerable amount of space on your drives.

Wise Disk Cleaner, with its intuitive and easy to use interface, helps you quickly wipe out all the junk files. Using the program is indeed easy. It also works fast when both scanning for files and deleting files.

Click here to download Wise Disk Cleaner

How to undelete a folder?

Try this freeware software - Recover files

Can I split a PDF file?

Why not? You can split and merge as well.

Do you want to split 100 pages of single PDF file into 10 separate parts (Split)?
OR
Do you want to add 10 PDF files into one PDF file (Merge)?

Click here to download and PdfMerge Application. It's easy and effective.

How to download videos from You Tube?

http://youtubedownload.altervista.org/

• From the above link, first you download and install a software called, "YouTube Downloader"
• Using "YouTube Downloader", you can download videos from YouTube Video, Google Video and Yahoo Video.
• This also has options to convert the videos to Ipod, Iphone, PSP, Cell Phone, MP3, Windows Media, and XVid.
  

Hello sir, I am Mohd. Amin. I want to record songs from my tape recorder. Please help me.

Software
Download and Install (free software) Audiograbber

Hardware
Tape recorder
RCA Cable (to connect your tape recorder and pc)

To record audio from your Tape recorder

• Install and run Audiograbber
• Connect one end of the RCA cable with Audio out (of Tape recorder)
• Connect other end of the RCA cable with Line-in (of your PC sound card)
• Play the tape
• Click the record button in Audiograbber

Selva, suggest me a tool to practice mouse for my daughter?

Online Mouse Practice

http://www.mouseprogram.com/
Visit this site to practice mouse. It's really simple and effective for kids

After practicing here, download and ask your child to play the 'Mouse Practice Game'.

Mouse Practice Game
http://www.lawrencegoetz.com/programs/unlock-lmm.htm
Click this link to download 'Larrys Master the Mouse' game.
This is a wonderful game to practice mouse.

Selva, I cannot click and open drives in my computer. It asks for the programe to open this! . Help me!

http://www.softpedia.com/get/Antivirus/W32-Rajump-Removal-Tool.shtml

Click the above link.

Download w32-Rajump-Removal-Tool

Install the software & run

This may help you.

Note : Switch off "System restore option", before install and run

Suggest me a software for 'Screen Recording'

What is a 'Screen Recording' Software?
Generally these Screen Recording softwares

• Helps us to prepare 'Tutorials'.
• It captures everything from your monitor.
• It can be an image, animation, flash file or text.
• Whatever happens in your monitor, including your mouse movement, is captured and saved as an .avi

There are many freewares available for 'Screen Recording'.
CAM STUDIO - Open Source : This is my favourite
Freez Screen Video Capture : This is also reasonably good
Auto Screen Recorder 3 : This one is also equally good.

With all these softwares, you can either record the full screen or just part of the screen.

Use - Capture - Present - Enjoy!