Not really much bad to comment on, looks like a very professional site. The homepage graphic is great, it gives pretty good overview of the particular segment of the market you're targeting (picture worth a thousand words and all that).
The only, very minor, things that I spotted were -
all the (meta) titles seem to end in a comma?
ditch the 'acatalog' from the url path (I would never have recognised that as an actinic site btw)
I wouldn't use a PO box in the address that just looks dodgy
there's a strange character in your FAQ "£12:95"
As to your questions, I'm not so much help...
Think you've got just about everything covered on the site
The site is professional and comprehensive, that would certainly influence my buying decision, as would trust (can I trust you not to screw up the engraving etc, and could I trust you to sort out any problems), followed by pricing and delivery
not really the sort of stuff I'm into though... sorry!
I do like the simple bold colour scheme, I think the main logo/text 'The Corporate Gifts Company' could do with jazzing up a little it doesn't look very professional as it is now. Also I would lower the left hand menu so 'promotional products' is inline with the link for Home as it would be easier to read not having your eye dart up to the top to read it. Hope this helps.
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Miskellaneous : illustration, character design, logo design and children's illustration. http://www.miskellaneous.co.uk