Yes, it can easily run Windows 7, either the 32 or 64 bit version. However, you need to take in consideration the graphics capability of the MBP 13" machine and weigh it against what games in Windows you intend to play. The MBP 13" uses an integrated graphics chipset which shares memory with the system.
it's a 2d side scrolling mmorpg other wise called maplestory. It should be able run it find, i mean underspecs it says windows 98 can run it hahah. My other question is, in windows 7 mode can i hook up a pc keyboard to my macbook pro so i can have pc keyboard options? Like page up page down etc
That should work fine. I hooked up a Windoze keyboard back in the day when Quake Live came out. After getting killed 27 consecutive times in a row I thought it would be a good idea to smash the 10 dollar Keytronic keyboard than the one one my MBP.