Seasonal Affective Disorder Resources?

I've struggled with depression on and off for most of my life, with the worst bouts always happening in the winter. I've been on a low dose of medication for more than a decade, and am quite stable, successful, and happy most of the time. The last few winters, though, have been exceedingly difficult, and I feel I have to spend the first few months of spring 'rebuilding' from the setbacks I suffer in winter. It's gotten to the point that I have started to dread winter all year, and am fantasizing about how I might be able to spend winters somewhere sunny - not very realistic for a working mom with small children. I've tried light therapy lamps without success and feel there must be some new options for treating SAD out there. Would love any resources, recommendations, etc. Thanks in advance!!