Gotta let us know the parts you have in order for any of us to determine whether it'll still fit into anything today.
...
1.) your budget in your country's currency
2.)
what country you reside if not listed in your avatar area....New Zealand...ouch, it'll be expensive there.
3.)
pre-assembled PC? ...or can you build your own?...should build one yourself
4.) what is needed other than the PC tower? Monitor, speakers, mouse, keyboard, Windows OS disc? All these can jack up the price.
I can help you later on tonight should nobody answer you, but gotta work right now

Awesome, thank you for your reply

I'll look into the AMD card.
Now, the thing is, I wouldn't have a cluuue what parts I have

I just kinda decided last night when I dug the old PC out that I was going to upgrade it. I have no experience, but I figured I could learn, right? All I can see is that my motherboard says "Foxconn" on it, but I can't say much more than that, other than it's about 6 years old

if it would help, I can take some photos?
1. Basically, I just want to get it built to a decent standard. Not hardcoe-ultimate-top-of-the-range specs, but decent. I have no real budget of yet, as I'm moving in a month, going on financial aid (as a student) and maybe getting a job, so I will basically be buying bits when I've got the money to, with no real budget cap.
2. Yeah

3. Planning on building it myself. I've got one that was once upon a time running, had some bits nabbed out of it, and is no longer running. I pretty much want to put all-new bits in it.
4. Basically nothing. I've got a few places I can get free/cheap monitors from, I have keyboards coming out my ears, good speakers and a broken mouse but it does the job. OS disk will be needed, propably, which I'm not looking forward to. Got the tower, just need to buy things to put in to make it play nice.