Well, if the icons he made are screenshotted, they are not allowed for submission. If they are freehand, preferably completely, he is allowed to submit them if the author is not contactable for over 2 months. I recommend to try reaching Mc! at WC3C and ask him though, he might be available there.
I see you're new. I'd like to point out two things:
1, Read the rules of submission. You are only allowed to submit an icon that's freehand, which basically means you have to create every single inch by yourself.
2, The Hive Workshop is not a site supporting any illegal filesharing transactions, if you want Photoshop, buy it. If you want a usable free art program, get GIMP.