Can I use AOL with this modem?

Yes you can, but you need to check with your ISP. If you are using AOL for internet access via a dial-up modem now, then you need to find out if AOL offers DSL sevice in your area. If AOL does not offer DSL service, then you need to find out who does and switch to that ISP. If you switch to a new ISP, you can still use your AOL account using their "Bring your own Access" plan.