A friend of mine went for her first job interview:
"so what do you know about the company?"
"nothing"
"why do you want this job?"
"to get my foot in the door"
Needless to say she didn't get it!
CVs - absolute maximum of two pages but the second page should be supplemental info. The first should get the attention. Also, if it's not going to get you the interview, don't put it in (you played volleyball at school, so what?). Don't have unnecessary titles like Name: John Smith, Address: 2 Glebe Street etc. It's pretty obvious what these are. Also, CVs are only there to get you an interview NOT the job. It should be enough info to tempt, not necessarily the whole story. Say what you did, not what you didn't, e.g.
"Hmmm, he worked as a senior technician, might get him in for an interview. Oh no, hang on, it says he didn't work on construction projects. What's the next CV say?"
"Says she's worked on WordPerfect but not we use MS Word." Word processor will do - packages are pretty much the same.
On my CV, I have my contact info large and in bold at the top of the first page. Separate sections entitled 'Key Skills' 'Qualifications' 'Employment History' 'Publications' - my second page is a list of projects (divided into sections) that I have been involved with. Make use of bold and italics to emphasis at a glance.
Interviews - bluff confidence. Look at people directly when you talk to them. Don't lie, you'll only get caught out, but don't do yourself down.
"So have you worked on construction projects?" "no, but the technical skills I've got are used in construction, so I can easily adapt them"
And do your homework obviously. What is the company like? If you've never done the job before, try to find out what exactly is involved by reading the job description and googling for a similar job description.