I'm not familiar with the ExtractNow program, but WinZip is a good program, although it is shareware. You could also try 7Zip
, which is freeware. I've not used it but others that have speak highly of it.
Maps that were created for 1.06 are noted in the comments box (the section on the right in each maps box
) for the download. If it doesn't specifically state the 1.06 patch is required, it's safe to say it will work in 1.05. If it doesn't specify any version it will also most likely work in 1.05.
1.06 maps will work in 1.05 but may not play as intended due to the changes that were made in the 1.06 patch.
1.06 maps will not
show in the map selection list of 1.05
All maps should work in 1.06 but again, may not play as intended if they were created in 1.05 or earlier.
If you're running Vista, it might be advisable to install RRT outside of the 'Program Files' folder, IE; someplace else on C drive, due to Vista not allowing files in the 'Program Files' folder to be written to.
Hope that helps.