Brett's and Zoobie's advice are very good.
WHen you meet with the director make sure to point out the fact that this IT guy did the following:
1) designed the company logo in word when a professional would design in PhotoShop or FireWorks and compress the image for faster downloads
3) That he insists on using "Lucinda Calligraphy", a font that most people won't have, so a generic default would be used on most systems. That it would be better to use a nice font that most people do have such as Georgia.
4) That you have experience using Dreamweaver, Go-Live (name your poison) which most professional web designers use, and the IT guy is only versed in FrontPage, a program that only corporate hacks use.
5) That if the director wants YOU to do the job, he trusts you to report directly to him
6) That you would like an opportunity to prove yourself to him/the company without "help" from someone, whose intentions you are uncertain about, and whose professional instincts may not be up to the level where you are at. (Try and make this argument relatable to the director/boss and say: "It would be like one of the ______ telling YOU how to run your business." or find a suitable comparison...)
If he is open, he should be amenable to these points and be willing to give you the opportunity to shine.
Note: The trick here is to SELL your skills and ask for an opportunity to take ALL the responsibility on your shoulders. Sell this without putting down your co-worker (Mr. IT) because the boss-man may have a longer history with him, and it is never very acceptable in a workplace to put someone else down. EVEN if you DO have the right skills and the other guy is being a jerk, don't call him names, or put him down in front of the boss. HIGHTLIGHT YOUR SKILLS AND EXPERIENCE and ask for the total responsibility and trust from the boss to do the job.