Here is a link to the .bin files for 2.3.3 and 2.3.4
These are only for the Kindle 2 International
http://rapidshare.com/files/38278881...2_gw_2.3.3.bin
http://rapidshare.com/files/38279404...2_gw_2.3.4.bin
2.3.3 is standalone, 2.3.4 requires that you install 2.3.3 first.