newbie-help need for weak connection please

No. Changing to USB 2.0 won't effect the signal strength.

Try moving the network adaptor to another position in your room. Use USB extension cable if necessary.

If the antenna is removable you could also try replacing it with a better one than the one supplied. You should be able to find a free design on the web.

Does the bar allow you to use it, even when you aren't a patron?

There's not a _lot_ you can do, but I'd start with a Linksys WAP54G in client mode, different positionings, and possibly an external antenna, though I'd give it only about a 50% chance of success.

Of course, now you're into the cost of several months of your own broadband service that isn't subject to the security issues of using an open public hotspot...

Ignore the message if your system is working. This only applies to data transfer rates and it is unlikely you have an internet connection that is much faster than your wireless connection speed! I'm amazed they don't tell you to buy one of their own products. You could try improving the signal by buying a bigger aerial for the router or making a reflector for it. Have a Google - I made a semi circular reflector that clips on to the router aerial and it's quite good.