*) Find the post which you want to quote.
*) Click the quote button which appears to the bottom right of that post. The button looks like this: [img]http://www.toytowngermany.com/forum/style_images/toytownblu1096523621/p_mq_add.gif[/img]
*) On clicking it the button will turn red (provided you have javascript enabled on your browser) like this: [img]http://www.toytowngermany.com/forum/style_images/toytownblu1096523621/p_mq_remove.gif[/img]
*) Then find the other topic, the one you want to post to. Click one of the reply buttons (doesn't matter which): [img]http://www.toytowngermany.com/forum/style_images/toytownblu1096523621/p_quote.gif[/img] [img]http://www.toytowngermany.com/forum/style_images/toytownblu1096523621/t_reply.gif[/img]
*) You're then presented with a textbox containing the code for quoting. Look at this and delete any excess text - i.e. text which isn't relevant to the bit you wanna quote. Don't delete any of the codey bits, but the more plain text you delete the better, quotes should be as concise as possible.

*) Once your quote text is ready, add your own message beneath and the click "Post" button, and Bob's your uncle. A cross-topic quote including the original poster's name and post date.
Note that the quoted text also contains snap the magic trackback button. Snapback is a little red arrow in the bottom far-right. Click the arrow and you're sent back to the original post. Thus you don't necessarily need to write, "I took the above quote from such-and-such topic". Sure, you can post that if you like, but it's redundant because the crosslink is already there. The snapback button looks like this: [img]http://www.toytowngermany.com/forum/style_images/toytownblu1096523621/post_snapback.gif[/img]
Here's a screenshot of a crosstopic quote with the snapback button highlighted:
