Guess not :(

Maybe you could use the umbracourlname property, and fill that on creation of the new pages

http://our.umbraco.org/wiki/reference/umbraco-best-practices/umbracourlname

Or umbracourlalias

http://our.umbraco.org/wiki/reference/umbraco-best-practices/umbracourlalias

What I'm doing at the moment:

I have a 'folder' document inside the content tree called 'partners', but I don't want the url to be /partners/some-partner.
So I created an instance of ApplicationBase which sets the property umbracoUrlName like /some-partner.
The code:

public PartnerBase()
{
    Document.AfterPublish += new Document.PublishEventHandler(Document_AfterPublish);
}

void Document_AfterPublish(Document doc, PublishEventArgs e)
{
    doc.getProperty("umbracoUrlName").Value = string.Format("/{0}", GenerateSlug(doc.Text));
    doc.Publish(doc.User);
}

The GenerateSlug method:

static string GenerateSlug(string phrase)
{
    phrase = phrase.ToLower();
    phrase = Regex.Replace(phrase, @"[^a-z0-9\s-]", string.Empty); // invalid chars
    phrase = Regex.Replace(phrase, @"\s+", " ").Trim(); // convert multiple spaces into one space
    phrase = phrase.Substring(0, phrase.Length <= 45 ? phrase.Length : 45).Trim(); // cut and trim it
    phrase = Regex.Replace(phrase, @"\s", "-"); // hyphens
    return phrase;
}

I tried but this doesn't work for me maybe i should debug it but that requires me to setup environment on my machine.

is working on a reply...