Order of AP connection

Hi, I have 2 AP's (DWL-800AP+) in the house. My Dell Inspiron 2200 always wants to connect to the farthest AP, with a weaker signal. I tried changing the order, but it still connects to the wrong AP, I have to change it manually in the Network zero utility (or whatever it's called). They have different SSIDs, same channel, same WEP. It's set to automatic, but always chooses the wrong AP - is there any way to force it to connect to a preferred AP? Thanks in advance! Rob