Many employers (especially large corporate employers like Walmart) post the employee's W-2s to the Employee Only section of the corporate website. You need to contact Walmart to find out if they do this as well.

I'm wondering why you ask here rather than the Walmart payroll/HR department. They should have given you instructions to access their secure site.

Iam employed at Walmart, I would like to get me 2010 W2's online, instead of waiting until Fed.2012 for it to be mailed to me.

So why are you asking us? Why not ask your human resources or payroll dept? We do know that Walmart makes W2s available online. When they will be available I don't know, but your payroll dept will know and they can tell you where to go to find them.