Hi PSL
I know you've asked this question before, and I'm sorry that the answers you got weren't enough help for you. To be honest, the best help you could get would be to have lessons with a singing teacher. But as that's not available to you, lets look at what you can do to improve your voice.
The quality of your singing, and to some degree the range you can sing, depends on how you support your voice.
This is what I said about support in a previous thread on the forum:
QUOTE(katyjay @ Aug 30 2005, 09:24 AM)
For me, support happens when my whole body is physically relaxed and I put all my mental and physical energy into the music.
I don't make conscious muscle movements, and certainly don't do anything to my diaphragm or throat, I put all my concentration into enjoying the sound that comes out - whether or not anyone else does

.
I describe it as singing with the whole of me - not from the neck up, or the diaphragm up, but from the toes up.
If the air coming out from inside me is relaxed and energised, the voice will be supported, otherwise it won't.
If I try to intervene and make my diaphragm or throat or abdominal muscles do something, the result is a nasty, unsupported, strangulated squeak.
My body knows how to breathe rather better than my mind does, so I have to let it get on with it.
One way to feel support is to give a really heavy sigh. Then once your breath has come in again, do the sigh again, but as soon as it's started let a note from the middle of your range come out to "yah".
Imagine that note disappearing off into the ether, and notice how your body feels as the breath begins to run out.
If it's a sensation that every drop of air from your body is going into the sound, then you'll feel and hear real support. And your body will automatically take another breath ready for the next sound.
So the next time, try it without doing the sigh first, just relax the breath out and see what happens......
Try singing a "yah" as I describe above. First do it on the C above middle C. Then when you're comfortable with doing that, try doing a downward arpeggio - C, G, E, C. Let each note fly away from you and then breathe in to sing the next note. Then try the same thing again, but sing the whole arpeggio on one breath.
Then do it again on B, then Bb and on down as far as you can go. Then try it again from the C and do it on C#, D, Eb.....and as far up as you can go. You may well be surprised at how far that is.
It's an effective way of warming up and getting your voice working. Once you've got used to it, try and use the same method of starting a note, but with the tune and words of a song.
Good luck.
Cheers
Katyjay