It's in the little strip center on the S. side of Oltorf between Burleson and Burton. Just past the Whataburger. There's some pizza place at the other end of the strip center who's name slips my mind now.
It's next to the Domino's. I ate at Hai Ky this week, and ordered their pad thai - it was very good. I had a vermicelli bowl a while back, but was not too impressed. One thing against Hai Ky is that they have such a small space; it's usually packed during lunch. The nearby Pho Cong Son (formerly Pho Cong Li) has at least twice the seats, easily.
For my money, Tan My (formerly Tan Tan) at Ohlen/Payton Gins pwns all other pho joints. I typically order the tofu vermicelli with veggies - allsome bowl of goodness.