Graphic designer needed to re-imagine our website look and feel - logo, buttons etc

Information for the business: We sell lighting online
Industry: Business
Design details: I am looking for a design that will appeal to B2B consumers and be more "Apple" than "Tesco" in feel. We are trying to move away from the pile it high sell it cheap end to a more professional, designer led focus.
Target audience: B2B
Ideas for the visual style: more "Apple" than "Tesco" in feel
Things to avoid: Jokey stuff
Preferred colors: Black, grey, orange
Urls to draw inspiration from: http://www.toplightco.com/index.html
Where the design will be used: Web
Extra notes: I need someone to design a logo for www.toplightco.com plus buttons in matching style for the website. For http://www.toplightco.com/index.html

I would need new logo to replace the one at the top left (and of use elsewhere)
New matching caption images for the rotating carousel
New matching buttons (using existing text) to replace the current Site Visit/UK Sales/We ship worldwide

New diagrammatical button images for use on a range of pages at the levels like this one:
http://www.toplightco.com/acatalog/Black_Easytec_2_Track.html
I need 3 buttons, one depicting a tracklight, one depicting the track and accessories, one Info button (I may require different ones like these in the future also).

I need new Prev / Next buttons for use on all product pages like the ones on this page:
http://www.toplightco.com/acatalog/Bima_I.html

I would need these delivered in .psd and .jpg formats