Bethesda themselves release modding tools, and the console is enabled by default, so that suggests that you should be good to go right? Kind of.  
Apparently once you issue a console command, you're no longer eligible for achievements until your next session. So if you're worried about achievements, enter your console command 'cheats' (like "fov 90"), save, exit, start up skyrim, load, and be on your merry way.

Sources:  
[gamasutra review][1] under **Console = Cheater**  
[gamefaqs][2]

  [1]: http://gamasutra.com/blogs/EricSchwarz/20111111/8866/Skyrim_or_How_Not_to_Make_a_PC_Game.php
  [2]: http://www.gamefaqs.com/boards/615805-the-elder-scrolls-v-skyrim/60963589