Oops.. I tried pressin search more than 10 times but dint think of usin enter at that time in the previous file..I almost did it right with third column .. Searching was case sensitive but i ve modified it to be insensitive so dat works fine. Just 1 thing now:

I realised that when I search a product and select its checkbox, and then search other product, the checkbox from the previous products is removed and hence entire list is not extracted,only the last searched and selected product is extracted. Its probably pressing the enter/search button that erases all the previously selected checkboxes along with displaying the search results. (If i dont use search, I can select multiple products and extract them without a problem).

Maybe a small change can fix dat..