converting PNG files to EPS

I am writing a paper using LaTeX. LaTeX needs the figures in the EPS format. definitely one can also use PNG, JPEG or TIF, but then that wont create a dvi file. now, all my screenshots taken for the paper were in PNG format, so i had to look for a tool which can convert PNG files to EPS files. and i managed to locate one pretty cool program called Advanced Batch Convertor.

this is the website of this program. one can get a trial version for free.

http://www.batchconverter.com/

It works very well. the best part is I can convert multiple files in a batch.