As a true freshman, he appeared in the first two games as a backup offensive tackle, before being lost with a shoulder sprain and being granted a medical redshirt.

Walter was named the starter at left tackle as a redshirt freshman, replacing the graduated All-American Orlando Pace.

[2] After being granted an additional year of eligibility, he returned as a sixth-year senior to achieve a school record 49 starts (all at left tackle) and earn All-Big Ten honors.

He was declared inactive during the first 4 contests and started 8 games at center after Andre Gurode was moved to right guard.

The next year, Al Johnson was drafted to replace him in the starting lineup and improve the center position.