It's no problem!

Here's the answer I gave to a similar question on another thread regarding the purpose of and distinction between LSAC and LSDAS:
Here's the deal:
LSAC is the umbrella organization under which both the LSAT and LSDAS fall. You don't "register" for LSAC. LSAC is just the organization that handles LSAT registrations and LSDAS data.
To register for the LSAT, you go to the LSAC website (
www.lsac.org). When you register for the LSAT, you can also register for the LSDAS. Each of them has a separate registration fee, but they are both done through LSAC and LSAC handles both of them.
All your information (applications, LORs, transcripts, essays, etc.) will all go through LSDAS. LSDAS will process it all. LSDAS will also have access to all your LSAT scores, since it is a part of LSAC. Along with putting together all the information you submit to them, LSDAS/LSAC will also put together a Law School Report for each of the schools you apply to that will include your LSAT scores. They will take care of everything, including sending it all to the schools you apply to.
A very useful resource is the "Applying to Law School" section at LSAC.org. Take a look at it; there's a lot of comprehensive information there:
http://lsac.org/Applying/Applying-menu.aspTo answer your specific questions:
Personal Statement: Depending on how the school prefers or requires you to submit your application, it will either be via LSDAS, via paper app, or online via the school website. You will have to check with each school you are interested in. However, almost ALL ABA-approved schools require the use of LSDAS, so that is most likely where you will submit it. It is very easy; essentially, you just copy-paste the essay you've already written into the application on LSDAS. It's very comprehensive system, not hard to follow. Have you had a chance to log into LSDAS and take a look at how it's set up? Take a moment to do that if you can and poke around on the site and on some applications; it will likely answer a lot of your questions. It's not a hard system to figure out once you take a look at it.
LSAT score: LSAC will take of automatically linking your LSAT score with your LSDAS applications and profile. You don't have to submit anything. Since LSAC controls both LSDAS and the LSAT, they do it automatically.
Transcripts: You send the institutions "Transcript Request Forms" that you get off LSDAS. The institutions then send the transcripts directly to LSDAS. LSDAS is essentially a big clearinghouse of applicant information; they process, keep, and organize your info during the application process, and then send it off to schools when the app is complete and you are ready.
Rec letters: These are similar to transcripts. You give your recommenders "Letter of Recommendation" forms you will get off LSDAS (some schools have their own forms they also require--you will see these forms when you look at their application on LSDAS). Your recommenders complete these forms, write their letters, and then send them directly to LSDAS. LSDAS does NOT accept letters of rec sent from you, so make sure that your writers send them on themselves.
Application itself: As I mentioned above, it depends on the school, but most schools use LSDAS. You will submit all your info to LSDAS, and then you will submit your apps THROUGH LSDAS, as well.
I'll reiterate my point above, since I'm one of those people that need to learn by doing (and, with a system that can
sound as complex as LSDAS, I think it's the best way to go about it): Take a moment to set up an LSDAS account, and then log in and poke around on the site and on some applications. Once you get some hands-on time with it, it'll get easier to know what to do.