[Genome] linking to ucsc genome browser

[Krishna Palaniappan]

Hello,

Given an Entrez/Gene ID, or a gi number of a refseq protein or a refseq 
protein accesssion ID, how does one link to the UCSC genome browser for 
the model euk organisms, specifically:

human, mouse, rat, zfish, worm, fly, arabidopsis?

Could you point out the base URL template that we can use and the 
parameters?

I tried digging thru the various help pages but could not find specific 
information on this.

thanks
krishna

LBNL, Berkeley