Where (or Which) can I download the GPU mining software? Also, Can I do mining now? Huh

Mining is possible, but mostly with ASICs. However, if you have a proper GPU configfuration (I am not a miner myself, so I can't say what "proper" really means) you can try to mine in one of the pools.
I'd recommend sgminer

Here a few links:

https://github.com/sgminer-dev/sgminer
http://cryptomining-blog.com/2586-download-sgminer-4-2-1-scrypt-gpu-miner-for-windows/
http://cryptomining-blog.com/tag/scrypt-gpu-miner/
https://github.com/CryptoCoderz/sgminer_HMQ1725

Thank you very, very much Grin