Persistent WiFi/AirPort connectivity issues

If anyone has any input that could help me or perhaps reduce my ignorance, it would be much appreciated.
My Black MacBook has had persistent wireless connectivity issues since I purchased it almost 2 years ago. Even when it shows 3 or 4 bars in my AirPort preferences, it has rather slow page-loading abilities.
For some reason, if I keep selecting my preferred network from my AirPort menu (even when it has NOT dropped the network), that tends to speed up my page load rapidly, but only for a couple of seconds.
It fares a little better when connected directly with Ethernet, but still pretty poor, to the point that I am often mocked by my PC-using friends.
Is there a software update I need? Or a network accessory I can purchase? Or can I replace my built-in wireless card? I am open to anything at this point. Thanks in advance,
K.
Message was edited by: newtomac1553
Message was edited by: newtomac1553
Message was edited by: newtomac1553
Message was edited by: newtomac1553

Have you tried connecting directly to your router with an Ethernet cable to see if wired performance is significantly better than wireless? I don't see any other inexpensive solutions.
Spending several hundred dollars or more to upgrade your home router and adding RAM and a new hard drive two-year-old computer is certainly cheaper than buying a new computer outright, but it DOES NOT give you any guarantee of the faster online and video performance you seek.
An 802.11 'n' router (with a gigabit wired connections) would probably help connection speed, IF you have a high-speed internet provider with one of the faster DSL or cable services. The fastest 'n' routers provide up to 300Mbit/sec transfer rates, compared with 54Mbit rates for most of the 'b/g' routers, and some higher-end routers (like the Apple AirPort Extreme) support dual band MIMO for multiple simultaneous connections by the same computer, which provides a potential for greater performance. Stop by an Apple store and ask for a demonstration _with your MacBook_ to see if you experience a enough difference to justify the expenditure.
You have to click the "triangle" after the Intel ICH8-M AHCI to see the detailed drive information dropdown. You seem to have plenty of hard drive space available, but I'm guessing you have a 5400 rpm drive. Upgrading to a 7200 rpm drive would help overall system performance some with faster read and write times, but you really don't need extra space at the moment.
Upgrading to 4Gb RAM could also help if you run lots of programs simultaneously, but might not provide noticeable gains for browsing and online video, since you're already at 2Gb.
Of course there is not an upgrade to the GMA 3100 chipset and 144Mb of video ram. It is better than my GMA 950 with 64Mb, but not as good as newer/faster/better MacBook and MacBook Pro models with faster microprocessors and more sophisticated nVidia video chipsets from Apple.

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