Wpa cracking on a handheld is going to be pretty much impossible. The dictionary file's size alone stop this. Then you have to look at the processor speed. I've done my linksys router with a dictionary word of "password", took about 5 minutes. As soon as I changed it to "p@ssword", couldn't do it with the hash table I was using. So while yes, it's possible to crack the password, it's really not worth it.