I'm trying to recover all of my photos that I accidentally deleted from my memory card.. It's not coming up as a driver when I plug it in, so I'm not sure how to get them back. I have a Canon sx130 IS.

Hi, buddy! Watch this video and you will find a good way to recover your lost photos in your memory card.

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Have you checked this memory card directly on your computer?
If you have not, you can have a try!
If this card can be functionally read, the inner data often could be easily rescued. But, it cannot be read normally, you'd better take chances with a camera card data recovery freeware to rescue all your wanted photos back:
http://micro-sd-card-recover.blogspot.com/2013/11/recover-photos-from-Micro-sd-card.html
This data recovery tool is really usefully as my camera card is mistakenly formatted. It works really well.
So, have a try here:
http://www.4cardrecovery.com/
Note: Never save all precious photos on only one memory card or location.

Take no more pics until you've recovered your photos, take the card out of the camera. This is to reduce the chance of you overwriting some of your "lost" photos. There are many good freeware photo recovery software options that may help you recover your photos. This article reviews and outlines several of the better ones: