And how should I update my wallet? I don't want to lose any coins...
Back up the wallet.dat file and then delete the gaircoin folder in the appdata folder.
delete the exe and redownload the wallet run the new 1.1 versoin. Then close it it creates new files in appdata
copy the wallet.dat file back to the newly created gaircoin folder in appdata. and run the 1.1 exe again.
To get to the appdata folder open run and type in "%appdata%" With out the quotes