Enter Hex WEP Key That Has No Viewable ASCII Equivalent?

I am trying to connect to a wireless router in the house I share with roommates. It is not my router, just what they give me access to with my rent. They are using a WEP key with this router. Just for clarity I will even post the WEP key (since no one on here will know what router this is for). The 5 byte WEP key in hexadecimal is 18 01 44 62 AE. the first 2 characters have no viewable ASCII character equivalent and Windows 7 doesn't appear to allow me to enter in the Hex values when entering a WEP key. So, can Windows 7 not handle this or can the WEP key for a network be entered in Hex format somewhere and I just don't know where yet?