You cannot convert one to the other. HDMI is digital, and has built-in Digital Rights Management (copy protection). Component is analog and has no protection. Some upper model surround receivers can 'up convert' component to HDMI, but will not allow HDMI sources to play on a TV with only component video inputs.
There are a couple ways to connect VGA to HDMI, the easiest are either using a converter or a cable. What you choose should depend on your needs. A converter is a box that allows you to connect your VGA component and your HDMI component into a box and converts the signal. The cable connects on one end to your VGA component and the other end connects to your HDMI component and can vary in length.
HDMI gives a potentially higher signal quality than component video - but whether you will get higher picture quality depends on the quality of your input signal. Blu ray needs HDMI, but anything at 720i or lower will get by on component.
An HDMI extender is a tool that is used to send a high definition digital signal from one device to another. They can be purchased online at Amazon and eBay or from electronic stores such as Best Buy and Future shop.
I would check out Best Buy. They have whatever you need when it comes to technology. Ask one of their employees and they'll be able to help you. Also try checking online.
There are a few different sources on the internet where one can find a HDMI vs. Component video. Some examples can be found on YouTube and also on a more specialized websited named TechHive.
To use an HDMI cord on the PS3, hook up both the AV multi out cord and the HDMI cord to the TV and turn on the TV to the AV setting. Go to options-display-display options(the first one), and follow the instructions. Once you press "yes" on the confirm settings screen, swith the TV to HDMI mode and see if it works. If it does, unplug the AV out cord on both sides. If it dosen't, refer to the instruction manuals.
One can purchase a HDMI to VGA converter from Amazon where there are many available for around $20 to $30. One can also buy them from eBay and Best Buy.
One can buy a 25ft HDMI cable from such online stores as 'Amazon' within their departments of 'Electronics & Photo - HDMI Cables', 'Computers & Accessories', and 'PC & Video Games'. Alternatively, high street stores such as PC World also stock a range of HDMI cables.
One can locate a monster hdmi cable at any electronics store locally or possibly Best Buy. Best Buy or Circuit City or P.C. Richards may carry these as these are pretty basic HDMI cables.
You can go online or to any electronic store to buy a hdmi to vga cable. This is a cable that has the hdmi adapter on one end and the vga adapter on the other end. This way you can convert a hdmi device into a vga device.
One can buy an HDMI over Cat5 cable on various places across the world wide web. The best place to buy a Cat5 is eBay, the best online store in the world.