I recommend that you read the
Walls manual, which contains 22 pages on SVG roundtripping, and then read Jeff Bartlett's excellent article on
SVG Roundtripping with Walls to get a better understanding of the process.
If you have questions (and you probably will!), search CaveChat first for relevant topics. If you have questions that still aren't answered elsewhere, then you're ready to start asking
specific questions about it here.
Good luck!