Border crossing between Rubvotsk (Russia) and Semey (Kazakhstan)

Here's a useful website with some details about a land crossing by motorcycle into Russia from Semey in Kazakhstan:

http://www.fernweh.ch/worldtour%202005/Journal/formalities/borders_kazakhstan.htm

Another site with info from some travellers who crossed from Russia into Kazakhstan at Semey:

http://www.travelblog.org/Asia/Kazakhstan/East-Kazakhstan/Ust-Kamenogorsk/blog-208486.html