The same thing living said is what i basically told you if you read it!
Says here, last sentence
All you have to do is open it with another paint program should work fine!
Same thing living told u except the "always open with this program thing" is only different he said!
Dont know about your computer but usally when i tell mine to open with another program when the other isnt installed uses that program completely!
You can put the icons for the program whatever you choose though it doesent have to be what the program is anyways!
Thanx Living for adding on and clearing things up