Since your board only has SATA II ports, I would get one of those. I like corsair drives. Other good brands are OCZ and Crucial, as well as others. Those are just my favorites.
For overclocking, going above .5Ghz from your normal speed, I would recommend an aftermarket heatsink and fan for your CPU. But here's how to overclock.
Go into your BIOS. First disable AMD cool n quiet and Turbo Core.
Find your multiplier. This would be one of the first options in M.I.T. (If your BIOS has that, not sure since its an older board.) You'll have to change the options from Auto to manual.
Put the multiplier to 0.1 more Ghz than its at. (That would be 3.3ghz for you)
Find your voltages and set it from auto to manual. Find your Vcore and keep it at the normal setting.
Save and exit.
At windows, get a temp reading program and Prime95. Run Prime95 while watching your temps. This will test for stability and to make sure you aren't getting crazy temps. (At about 50c and above, I'd worry.)
Let it run for 30 minutes. If it bluescreens or stops by itself, you're unstable.
Repeat this until you get an overclock you like. I went from 3.0ghz to 3.7ghz on the stock voltages on my 960t.
Once you get an overclock you like, run Prime95 for 3-5 hours. If it doesn't crash, you're stable.
If it crashes and you want to go higher, change your voltage to .25 high than normal. Repeat until it is stable and you reach a speed you want.
But be careful with your temps. Don't jump up your multiplier or voltage too high. Take it slow.