There are a few threads from previous years that talk about roasting tomatoes for sauce. I've copied 3 addresses below. Just copy each one and paste it in the address box to quickly find them.

Cheers

http://forums.gardenweb.com/forums/load/harvest/msg0911352216965.html

http://forums.gardenweb.com/forums/load/harvest/msg0817143817863.html

http://forums.gardenweb.com/forums/load/harvest/msg082037474860.html

Here's the link to Martha's Roasted Tomato Sauce on her website. She's been publishing this recipe (or minor variations of it) since about 1995, so it's an old standard.

Carol

Here is a link that might be useful: Martha's Roasted Tomato Sauce

Thanks so much, especially Carol!