Here's my question. For determining an SID, a non-chained shiny is required; if my starter pokemon turned out to be a shiny, does that qualify as well for determining an SID? (It may not be Platinum, where I wanted to breed, but I almost forgot my Diamond game started a year and a half ago had a shiny Chimchar for a starter... (now an Infernape, but still.))
Yes it will work.