Need some help with spots/scars

I seem to have a few marks on my skin that I would like to treat with OVER THE COUNTER products.  I have included pictures with some descriptions to help you guys help me take care of these spots/scars.

http://img135.imageshack.us/img135/3808/img00005200901141157pn9.jpg
This mark is on my face by my nose it is slightly raised but you can barely tell it is...I don't have great sensation when I put my hand over it.  It was from acne and doesn't seem to want to even fade with the mederma cream I have used for the last few months.  Is there anything else over the counter that will help treat this?

http://img233.imageshack.us/img233/8143/img00006200901141158qi3.jpg
I also have these marks which I would like to get rid off..They are from Acne as well...

http://img233.imageshack.us/img233/4139/img00007200901141158ye8.jpg
Marks from acne on my forehead

http://img233.imageshack.us/img233/3610/img00010200901141159bl1.jpg
I am not sure what this is at all but it is raised considerably and its pretty hard.  I don't think it could be from acne since its on my arm and its been like that for a really long time.

http://img145.imageshack.us/img145/2559/img00012200901141159xx4.jpg
I have these marks on my back from acne

What is the best OVER THE COUNTER treatment for these marks/scars/spots?  I don't care if it is going to take multiple products I just want to speed up the recovery time and hopefully rid myself of these marks.

[loiloi]

Hi. Clinique make an extensive range of blemish solution products. They have a unique product called Post-blemish formula which helps fade post-acne marks and prevents new spots from occuring in the same place. For older scars and hyperpigmentation marks they make a product called Even Better Skin Tone Refinisher. Use these products in conjunction with the cleanser, toner and moisturiser for your skin type. These are available online, but if you go into a store one of their consultants or counter managers will be able to recommend products to you.
Eloise.