Today I discussed with Zerg ability of using website templates with Linux. Result is not very good...

It displayes layers created in Photoshop in improper order. Also is disables masks and shows invisible  layers. Effects display different then initial files too. Maybe all this can be fixed with appropriate skills in GIMP. But I'm not sure. 

Also the question with slices is still open. Does GIMP allow to save for web? I know in has slising tool, but not sure how to use it. Also is there any software similar to Dreamweaver,but native to Linux?

Dear webmasters! Please answer if possible.