Where to get Envelopes?

[m16.livejournal.com]

I want to print greeting cards on a the Gocco printer my friend leant me, but don't have any envelopes.

Can anyone recommend a good place (or web site) to order bulk envelopes from? i need 5" x 6" (quater size, not sure what it's called) and recycled paper would be a plus.

Thanks in advance! i'm overwhelmed by the amt. of paper web sites i'm finding... with no luck.