Hi Calypso,
Can you accept this position for now since you need the income but keep actively looking for an alternate position? Or if you can't find what you are looking for can you work two part time jobs for now?
Even if you found something that is more what you were looking for and quit in two months Walmart wouldn't even shrug. They are used to high turnover - retail always is and unfortunately they do not do a lot to retain employees.