welcome to the stacks
1) we've been having some issues with the launcher...have you tried the download section to see if it works from there?
2) you have a 'size transfer limit' but should be able to add ringtones. some good sites are www.mobile41.com and www.tuneusin.com
3) there are two programs out right now. one at www.handango.com that is like $5 and one that is free (or by donation) at http://www.geekandproud.net/blackberry-software