Get imgburn. It's free. Build a recovery set of files from your two discs, then use Imgburn to create an image [an .iso file] from them on your hdd [Create image file from files/folders]. Default settings should work; extract boot files from one of the recovery discs. Creating a bootable image is not straightforward, is not a one-click operation, but the Imgburn helpfiles should steer you through it. There is no need to burn a cd, so no cost as you learn.
Get Unetbootin. It's free. Use that to load the iso onto your UFD.