I tried copying the whole output for the form, basically everything between the body tags. Unfortunately that did not work. I noticed there's a tutorial about how to do this, but the content of that form is for some reason quite different from what Marketo created for me. I do not see the same properties in my form, such as _mkt_trk, returnLPId, etc. It seems like none of the tutorial match the current Web interface either, we leaves me scratching my head as far as how to accomplish even simple tasks.