No, I changed the "hxxp" to "http" but it seemed not a valid URL.
Maybe you got the driver from gentoo's official site. But I recommend that you use the driver released by ATI:
If your gentoo distribution is new enough, you won't need to do much unless following its install instruction and have some configurations(especially not concerning kernel).
But if your distribution does not meet the requirements of the driver(i.e. X.Org is too old), you'd better not try to compile and install a new X.Org, you will get more trouble, trust me, I have experienced that with a FC2, and now that box will cost about 2 minutes to boot with the hard disk working all the time.....