tiny versions of openbsd?

[taproot420 <taproot420@myrealbox.com>]

Afternoon Gentlemen / Ladies,

I am looking for information about how to shrink "crunch" openbsd to a 
smaller size for a dedicated firewall/vpn server running from a Flash 
Drive such as the USB drives below @ tigerdirect.

  http://www.tigerdirect.com/applications/SearchTools/item-details.asp?sku=L61-3176

The above is a 128 meg. usb drive that is suppose to be recognized by 
the bios as a regular hd. If 128 is not enough they also have the 256 
version. This drive is also need because you can flip a dip switch to 
physically lock the drive from writes and i was thinking of having my 
firewall log to a nfs partition so i can lock the usb drive.

 There is embsd but i would like to make my own from openbsd 3.3 to take 
advantage of the new abilities pf has and the pro police compiler 
extensions.  Also i was thinking of how to move all the compilers and 
other apps not needed for a firewall to a cd and then just put in the cd 
and mount it when i need those apps. If anyone has done this or knows of 
some documentation that might help i would appreciate the info.