There's a known issue with the "Expedite" feature (i.e. to skip all editing steps) in OJS 2.1.1; see http://pkp.sfu.ca/support/forum/viewtopic.php?t=1130
for a patch that will fix it.
As for the XML import feature, see the "Import/Export" tool as Journal Manager. The DTD in plugins/importexport/native/native.dtd supports both base64-encoded embedded files and files linked in using "href"; have a look at the DTD and if you have any questions you can ask them here.
Open Journal Systems Team
Don't miss the First International PKP Scholarly Publishing Conference
July 11 - 13, 2007, Vancouver, BC, Canada