A Late 2008 Aluminum MacBook is only compatible with 32-bit WIndows editions, so you will have to install the 32-bit Windows 7.
Microsoft Access will work perfectly with Windows 7. Microsoft Access is included on Microsoft Office suite, so if you haven't purchased it, you have to purchase it. Also, maybe you don't need Boot Camp, so it's better a virtual machine for your uses. See > https://discussions.apple.com/docs/DOC-3321
If you want Boot Camp only to run Access, use a virtual machine instead