how did you manage a subnet of 300? i'm just curious, cuz it won't let me above 255, it pops up a warning about 255, but not 254 or below, i was unaware of the possibility to go higher than 255. i honestly though that 255 was the very highest a router could go... i have set my router to be 192.168.0.10 - 192.168.0.250, default subnet mask, but when i tried 300 it said invalid.