I believe it is time now for the guessing game............
1) Is the monitor about so high, and so wide?
2) Does the monitor look like a small TV, or is it flat in appearance?
3) What does the monitor cable look like?
4) Is your hair Brown, and do you smoke cigarettes?
NO.............just wanted to see if you were following along! Geez!
An Analog monitor, such as a CRT type of monitor, uses a VGA cable,http://www.wisegeek.org/what-is-a-crt-monitor.htmhttp://en.wikipedia.org/wiki/VGA_Connector
Scroll down a little for a VGA Cable example.
Flat LCD screen monitors are Digital.
Some may have a VGA Cable attached, but the best cable option is a DVI cable,http://en.wikipedia.org/wiki/Digital_Visual_Interface
(Click on any photo on those two Wikipedia pages, to enlarge)
Using these two examples, does one apply to the eMachines, and one apply to the monitor?
Let us say the monitor has a DVI cable.
The eMachines Desktop PC has a VGA port. (Connector)
For this you would simply use a DVI to VGA adapter,http://www.directron.com/dviadapter.html
Now notice...........this is a VGA MALE to DVI FEMALE.
The DVI cable on the flat LCD screen monitor, has a male connector.
The contact pins of it go into socket holes, in the DVI end, of the DVI to VGA adapter.
The VGA port on the eMachines, has socket holes.
The male VGA connector end on the DVI to VGA adapter, has contact pins.
Make sure you get the correct DVI to VGA adapter.
There is a male DVI to female VGA adapter, also.
This is just one example.
For instance I'm using an HP 2009M 20-inch widescreen monitor, AND an RCA 26-inch HDTV, as dual monitors.
Presently using the HP 2009M with a DVI cable, and the RCA L26HD31 HDTV with a VGA cable.
(I'm also using an ATI Radeon HD5450 graphics card. Pretty 'pud', but it does OK for what I want)
A computer sends out a digital signal. To get the best graphics quality, you ideally use a monitor with a digital cable. (DVI, etc)
When you use an Analog monitor on a computer, the computer has to change the digital signal down to an Analog one.
Therefore the graphics quality is not as great.
Digital cable technology now, is DVI, HDMI, Display Port, and Mini-Display Port. And some others I'm sure I've forgotten.http://www.hardwaresecrets.com/article/Video-Connectors-Tutorial/157
For additional questions please post in a Comment.
Also post what the monitor manufacturer name, and model number is. (Look on the back)
Are you using the VGA connector on the motherboard, (Back of computer), or do you have a graphics card installed?
If you have a graphics card installed, what is the manufacturer name, and model number?