You could do it manually, it's not that difficult.
1: Duplicate the layer you want to apply the glow to.
2: Select the lower layer, and use a combination of the Minimum filter (Filter > Other) and Gaussian Blur (Filter > Blur) to get the amount of 'glow' you want.
3: In the Layers palette, select 'Preserve Transparency'.
4: Select All, pick a nice foreground color for your glow, and choose Edit > Fill.
Voila! Outer Glow! You'll probably want to play around with the blending modes (Screen is usually good) and opacity to get the effect you want. Try it; it's much quicker to do than to write about!