Please Help Me Fix My Macbook Pro!!!

My other hard drive got too close to a magnet, thanks to my friends negligence. It started clicking so I shut it off and when I turned it back on a grey screen just came up and a folder with a ? on it flashed in the middle of the screen. So I believe it is not going to work anymore. Since I didn't have anything backed up yet (I've only had it for a month or two) I lost all my data and don't know how to get it back. My friend had a Hitachi HD that was pretty much just like my Apple HD minus the little apple symbol on it and it's 500GB instead of 250GB and no Apple firmware... I tried booting up my Snow Leopard OS disk and it didn't work on this hard drive for some reason, it doesn't even see it. Do I need to put it on an Apple HD or will any one work as long as it is blank?

Any hard drive will work in a Mac, you just have to format it using the Disk Utility which you will find on the OS X installation disk.

Technically there is such a thing as an Apple HDD, but it basically just amounts to Apple loading a slightly customized firmware on the drive. If you ever replace the HDD in an iMac without one of these drives, then the SMC won't be able to get thermal sensor readings off the HDD and it will cause the HDD fan to default to full speed. You can short the pins to keep that from happening, but then the fan won't cycle up with relation to the HDD temp.

With laptops it's less obvious. Basically just certain HDD tests with Apple's diagnostics won't run.

Of course the damage to drive would be considered accidental damage, so the coverage on that part would be voided if the OP were to mention that to anyone. The issues with the top case definitely do sound like legitimate warranty issues. Of course if it came with a 250GB drive, it's almost certainly a Mid-2010, so most of those have passed out of warranty by now.

To the OP: If you bought this as an open box unit somewhere, you'd better hope they submitted the form to Apple to get the warranty reset, or your only option will be taking it back to the place you bought it. Odds are that will create a whole series of behind the scenes issues over how to pay for any repairs. If they didn't you can try calling Apple's customer support number and explaining the situation. It's not unheard of for them to just eat the cost of repairs in situations where it's clearly not the customer's fault, some retailer screwed up.

but as this was a laptop it disregarded that aspect.

From the OP: my function/option keys don't work, none of the top keys like brightness, eject, volume, F1,F2, ect...

That could just be the lack of installing the Windows drivers for the unit, it could also be the sign of a bad top case.

In any case, you take it in to some Apple retail store, they will run AST on it almost guaranteed. It will flag the HDD as being a potential issue because it's not recognized as an Apple drive. That will be enough to prevent the unit from qualifying for Apple's flat rate OOW depot repair service. I don't know how an Apple retail store would handle it, but I know if I had a unit like that, I'd typically just ignore the HDD. If every other diagnostic came up empty, I'd just say if anything's wrong it's either software and/or the HDD which you replaced so you assumed responsibility for.