Computer Peripherals site

With all the news of the sandbox, and the timescales involved, I thought I would get some second opinions on a site we recently launched. The site involved p400.com sells computer peripherals and hardware.

WE developed the site in divs, and built the site in such a way as to maximise the indexibility within the parameters given. The site was submitted to Google three months ago in an effort to minimise the effect of the sandbox.

OUt of interest what sort of timescales are people experiencing these days, when they launch the new site, before they find themselves performing well on optimised sites within the SERPS.

Is p400 something sold? I mean your title has it 2 times... if not, maybe use good words instead.
Your description tag is not a description tag, it's a list of keywords.
You have a lot of useless meta tags in there.
You won't really do good using the same title and description on all your pages.
Maybe a little paragraphe on top about the page content to get a bit of spider food there.

You Should also consider using some ALT Text for your images...

P400 is the name of the site, However P400 is also a type of mobile phone, Sony I think, so have tried to place some prominence on the keyword.

Thanks for some of the feedback, must say some were left off by mistake, but needed highlighting all the same