Oh COOL. That's a fascinating career shift! You can definitely bring that up on a resume - I'm sure there's some planning and time management that goes with a welding role, right? Find ways to fit what you're currently doing into the admin box, and if it doesn't fit? That's cool. Mention it anyway. You never know what will pique a hiring manager's interest!

Are there any administrative task you can pick up in your current place of employment that you can do to bring your previous skills back into the forefront? Also how long ago did you work a customer service job? If it was in the last couple years I say you are already qualified to get back out there in the field.