Renaming of 400 images to match company id

Hi

I have a folder with a mix of 400 jpgs, gif and png logos. Each image is named after the company of the logo e.g. Baltic Exchange logo.jpg I need someone to check in a supplied excel look up the id number of the company which matches the image name and save the image as a png with the file name being the id number supplied in the excel for the matching company.


this is an urgent job which I would need completed by 9am uk time Monday

Thanks
Pablo