As you may have noticed, Blazer is not exactly blazing. There is no way to speed it up, since your browsing speed is determined by the data rate of your wireless carrier and the Treo 650 (which does not have "wireless broadband" capability, such as EVDO). That said, you can tweak Blazer to be a bit faster by going to Options > Preferences > General and disabling downloading images, javascript, and cookies. Of course this will make many web pages a bit unappealing, but it's a trade-off.
You can try
Xiino, which is a newer, purportedly faster browser and share your experience here.
Also, you might want to decide if what you really want is to surf or simply use the net to retrieve information. If it's the latter, you might want to give
Genius a try.
Welcome to the forums.
-K