Specific #2 - Warren's association with Cho, and Cho's occultic Fourth Dimension: This specific is documented by www.pastors.com, Rick Warren's Ministry Toolbox, July 25, 2001, Issue #17, Will The Next Generation Church Be On The Internet?, by Rick Warren.I tried the URL you provided and it didn't work, but I did find this link: Breakfast With David Yonggi Cho And Rick Warren, so it appears they moved the link at their site.It reads: "A few weeks ago, I had breakfast with David Yonggi Cho..."
Find it and read it for yourself (www.pastors.com/RWMT/printerfriendly.asp?id=17&artid=537&expand=1). Warren says that he has read Cho's book on miracles (The Fourth Dimension) and asks Cho how American Pastors could be more open to miracles. Warren also asks Cho to pray for American pastors.
Depending on the browser you're using, you can easily run a word search on the entire page for Fourth Dimension. From my search the book isn't mentioned. I've tried searching for Cho and then searching every page from the serach results and didn't find any references to the Fourth Dimension. If it's there I couldn't find it.
Also, Warren doesn't ask how American Pastors could be more open to miracles, but instead asks: "Do you think American churches should be more open to the prayer for miracles?" (It's the second to the last question.)
Warren does ask Cho to pray for American pastors. Here is Cho's prayer:
Heavenly Father, we thank you for many wonderful pastors and lay Christians in America. America is a strong foundation of Christianity through which the whole world received great blessings and benefits. We are now praying many, very rich blessings be upon each and every American pastor and Christian -- so that God may once again use America to send missionaries to the end of the world and to change the world for Jesus Christ. In Jesus Name I pray
Warren doesn't mention Cho's book by name in that interview...If I remember correctly, Warren says that he read Cho's book on visions and miracles (or maybe dreams and miracles).
A Google search for "Cho's Fourth Dimension" will give you plenty of hits.