Cut a graphics file

I need a JPG file of world flags cut info separate flags. Each flag must be placed in two PNG files with transparency: one in original 90x90 size, and one reduced to 16x16. The file name must be the sam as the country code in ISO-3166-1 standard. The attached file conains: [login to view URL] - the flags file. [login to view URL] - sample Polish flag cut fom file. [login to view URL] - Polish flag in reduced size.