Are you changing the URL of your blog or just changing the blog title?
If it's the URL, then you need to start all of your efforts over. All of your directory submissions, backlinks, etc. are all pointed to your old URL.
I assume that it is your blog title -- if so, it won't affect your directory submissions as those are links to your URL. Your site is only 1 month old and if it does not have any
PR yet, then you won't be affected. If you are ranked, oh well, just continue doing what you are doing in the first place to get ranked within one month of starting.
No one knows for sure when Google will do an update, but I can tell you that they just did one and the previous one was last March, if I remember correctly. So if you focus on all the right steps for developing your blog, by the time they do the next update, your change now won't affect anything.
Out of curiosity .... are you ranked? For those of you who think it can't be done -- wrong. It is all about timing. My biz-partner and I started a case-study blog on 18 Sep 2007 focusing only on content, keywords, and links using directory submissions & social bookmarking. 6 weeks later, Google does a SERP update and boom, our ugly little site is now a PR5. Of course, we didn't know google was going to do an update that soon after we started the blog. It does ensure us that our methods work (sooner than expected, since we didn't have to wait 6 months for another serp update). We are getting a steady flow of traffic and now Google says our page is "important".
Hybrid Mode
