Thanks for the prompt answer. Well, the link you provided hadn't any solution. BUT, it did helped me indirectly to solve the problem 
One of the links in that page, redirected to, *www.hclleaptops.in/products/product_multimedia.aspx. But this page didn't opened. Then I noticed the "HCL Leaptop" in the URL, and tried to filter the drivers on the link which I mentioned before (HCL Customer Support Division) on the basis of "Leap" keyword. And OH YA!! now my computer can speak :O
In short, through your link, I was able to identify the model of HCL L509 as being a Leaptop, which helped me find the drivers...
THANKS thetechfreak! One problem checked!
Now, only if answer to my Res. problem were that easy to find
One of the links in that page, redirected to, *www.hclleaptops.in/products/product_multimedia.aspx. But this page didn't opened. Then I noticed the "HCL Leaptop" in the URL, and tried to filter the drivers on the link which I mentioned before (HCL Customer Support Division) on the basis of "Leap" keyword. And OH YA!! now my computer can speak :O
In short, through your link, I was able to identify the model of HCL L509 as being a Leaptop, which helped me find the drivers...
THANKS thetechfreak! One problem checked!

Now, only if answer to my Res. problem were that easy to find
and lastly Banging your head (real hard) driver
....



everyone.

And that was it. From then on, I understood the importance of backups. And now I regularly make backups. Even backup of the backups! 
, but hey, the sole purpose of Internet is to provide any thing. And I mean, ANY thing! Cause, (mostly), things once uploaded on the Internet, rarely goes down. The real art, is how to track them down. 