Hard drive problem

Question

i recently got a bad virus on my laptop and had to reinstall windows xp but in doing this my harddrive is now identified in two .unfortunitly the one with the least memory (2 gb) is the main harddrive running everything and the other just extra storage this is killing my laptops preformance and driving me crazy i unfortunitly did not get a recovery disk with my labtop and cannot download it anywhere please get back to me as i need my laptop for my job greatly appreciated