Microsoft has finaly introduced a fix for a bug in all Windows 9x versions, which caused a lower throughput and higher retransmissions. The fix hasn't been completely tested, however anything should be better than the "math error" in the original Vtcp.386 file.

For more details and the file itself, check out the Cable/DSL patches section at http://www.speedguide.net/Cable_mode..._patches.shtml