More than 6 months ago, N900 had skype video support since a year ago, November 2009 when the mobile device became widely available. Also front cam quality is much improved if you have proper lighting. For instance, in the sun! or at least a bright room.

Try Super Flexible File Synchronizer http://www.superflexible.com/ I've been using it to backup and sync my files over SFTP and FTP to two different FTP sites. It can use zip file encryption on each individual file, and uses file name mangling to retain the date information in the file. All this is transparent to the user. It can run portably if you use Universal Extractor (a portable app) to extract the contents of the setup file, then after first run, in the Options, tell the program to use a single .ini file. This one tool does all that you need.