See what you get when connected using Ethernet cable before troubleshooting the wireless side. If the wired side is good, you get to start looking at such as distance to the wireless router, channel interference, poachers, etc.
I have wireless speed issues. I am using a 1.5mb DSL connection and called the provider yesterday. They looked at what they are providing and found 1.7mb. They did a throughput test running on my computer and it says a little less than 50kb. I am using a core5 Sony with windows7 64. It seems that I have something in the background slowing things down. What should I look for?