What you could do is extract the different parts as you want them. (Being from Australia, I'm going to show you how to do it in dd/mm/yy format)
Right([Field],2) & "/" & Mid([Field],3,2) & "/" & Left([Field],2)
This will convert 010203 to 03/02/01
Which can be inserted to a date field, or imported, the just change the field type from Text to Date.
Of course, it's not that difficult to change it to mm/dd/yy format - but I'm not going to do ALL your work for you :)
There are 10 kinds of people in the world - those who understand binary - and those with friends