Find a quiet time when the active portion of the log is at the beginning of the log file. Shrink the log as small as possible. Grow it back to full size in the number of operations that will give you the VLF count that you want.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability