how do i use this? i have a nokia 6300
The Nokia 6300 is a Series 40 device, so you can't install or use PyS60 on it (because, as the name says, it's only available for S60 devices).
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ok is there anyway to use it from a pc?
Well, sort of. You can try to use an emulator (with the PyS60 SDK installed) to run it. I tried the sms sending function and it didn't throw any errors, just that it didn't actually do anything.