Cell phone data cords

Hello,

I have a dilema. I purchased two usb data cords from the internet and received no software with them. I am trying to connect my phone to my computer and vice versa. When I plug the phones in to the computer it ask's for software. The phones I purchased the data cords for are Samsung r430 and LGAX275. If anyone can tell me where I can get the software for free or otherwise please advise.

Thanks for your help.