maintaining accurate time as a client

[jaymo_(_at_)_hiwaay_(_dot_)_net]

I'd like to keep accurate time on my system (as a client only). I've 
read a little, and xntp seems to be the "best" way to accomplish this. 
Two questions:

1) there appears to be no xntp package available for OpenBSD 3.1 (is 
this correct, or have I missed something?)

2) comments & opinions re risks associated with running xntp as a 
client or other techniques for maintaining time are welcome.

Thanks,
Jay Moore