How do I copy files onto the hard drive?

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http://askubuntu.com – I have never used Linux before, but I am temporarily until I can afford Win 7. I want to pre-install some programs onto the HDD so that I will already have them when I get Win 7. I have the programs on an external HD, I just don't know where to copy them to. Just as a side note, I am also having issue connecting to the internet. It recognizes the wired connection, and it is connected to it, but yet, no internet. Any help is appreciated. (HowTos)