Yes, there is a way to circumvent site-finder. It requires that you run your own nameserver instead of using your ISP's.
Download the latest version of
bind9 and install. Add this to your named.conf:
zone "com" { type delegation-only; };
zone "net" { type delegation-only; };
... If you do not have a UNIX machine on your network that can perform this function, I urge you to pressure your ISP to apply the wildcard-blocking patch to BIND. What VeriSign has done is irresponsible, greedy and damaging to the Internet community. It is only by applying pressure in the right places that we can make them reverse their decision. Don't wait for someone else to do it.