Warcraft 3 Lag spikes...WLAN Optimizer doesn't open!?

[Morphling]

I get lag spikes on warcraft on Battle.net every few minutes. So it's perfectly fine and then i suddenly start spiking alot, then it's fine again and so on. I think the WLAN optimizer would solve my problem but whenever i open it, windows vista says "This program has stopped working. 1) Check online for a solution 2)Close the program.
Checking online doesn't do anything. So please someone help me.

Thanks in advance--