First - try to pick them up as soon as the mailman brings them. Sitting on the curb is not good - especially with another cold blast coming.

Second - do nor repot immediately. Let them recover after the trip - at least for a week or 2. When you see that they spruced up and even started growing a bit - it will be soon enough.

Your bright window is probably just what doctor prescribed. Direct sun at midday is not good, morning sun is good. I am thinking that you will get small starters in 2" pots , not 12" plants - so - you can try your windowsill. If your open your white curtains - should be just right. If you feel that some direct rays hit your plants at the midday - shade them with a piece of white paper.

If you bought them from CVVIOLETRY - the plants look like they are grown in a greenhouse on a natural light - so they should be tough.

i.

Ditto ...

I left mine in their little pots until they bloomed:

http://forums.gardenweb.com/discussions/3507866/start-of-a-small-collection?n=39