Re: psd to svg
A PSD is mostly bitmap graphics, while a SVG is mostly vector graphics. As far as I know an SVG can include a bitmap but it the SVG is upscaled this won't be pretty (a pure SVG can be rescaled at will). So if you really need an SVG with a bitmap in it, just convert the PSD to some intermediate format (PNG) and include it in an SVG (using Inkscape or else).
If your PSD has significant vector graphics contents (not too likely, the author would have used Illustrator for this) try to export it to EPS and then load the EPS in Inkscape, this may preserve the vector part.
Warning: unless noted otherwise, code in my posts should be understood as "coding suggestions", and its use may require more neurones than the two necessary for Ctrl-C/Ctrl-V.