about wire and wireless notwork problem vista and xp

Hello here my probleme i would very appreciate if someone can have a solution about it. let me explain i got a router di-624 d-link and its connected on my windows xp sp2 with a wire and i have also connected my new laptop inspiron1720 wireless on it both internet connection work fine.
what i want to do is share my drive to one to another i have make sure workgroup is the same on both computer i got videotron cable modem.
on my windows XP i share 2 drive and i wanna have acces to them from my laptop.

sorry if my english is not that great but i think you can figure out what i wanna do
on my laptop i got firewall off and norton security on it i cant turn it off!
i mean i did menage to find out

can anyone help me sort this out thx in advance

yaz