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No, you have install Linux on a separate partition. If you have like 2 partitions, where 1 is for data and the other is for Windows system files. Then you can either wipe Windows and replace it with Linux and use the 2nd partition for data. Or you can just install Linux on the 2nd partition and have dual boot shared with WIndows.

I think you should just backup your data to a DVD or USB, and wipe the entire hard-drive and install Linux on it in default configuration (Linux installs with 2 partitions, 1 for its system files, and the other for your Home folder).

I will do a tutorial how to install Linux, stay tuned.

I recommend having someone who is familiar with Linux help you the first time or go through a step by step guide.

Also, if you are concerned about your files, make sure that you have them copied to another safe location (an external hard drive, USB flash drive, or online storage).

I love Linux and use it every day, but make sure you understand the basics before trying to install on your computer.

No problem. If you have specific questions, don't hesitate to ask here. I'd be happy to answer Linux related questions. If you have a powerful enough computer, you could try installing Linux in a Virtual Machine with the free Virtualbox software.

I'll look into this. Thanks for helping.

No problem. This may help.

Download what is termed a "Live CD/DVD" most of the distributions have one, for example, Ubuntu Desktop. It's probably the easiest (Unless you know what you are doing?) to burn the iso on to a DVD. Put the DVD into your ROM drive and reboot the PC. Hopefully, your machine will have your ROM drive selected as the first boot device? Either way, you need to boot off the DVD, not your hard drive (Windows). Basically, it will run in your device's memory (You might need to select "Try Ubuntu") certainly do not install [yet].

Have a play, you can't do any damage unless you access your hard drive through Nautilus which is Linux's version of file explorer. You can read and write to your C: partition if you like so be a bit careful there until you know what you are doing or you could inadvertently damage windows.

If you like what you see but are not ready to fully take the plunge you can do what's known as a dual boot scenario if your hard drive is big enough. This, once installed, will give you a choice at boot time to run either Windows or Linux.

HTH