I work on a surgical floor that utilizes LPN's to the fullest. We team with an RN and have 7-9 patients between us. I am a new LPN (a year exp now) and found that the RN's on my floor respect other NURSES who do their job, are a team player, can admit when they don't know something, share their knowledge etc.
The respect is there whether you are an LPN an RN. The respect isn't there if the above qualities are not present, whether LPN or RN. RN's on my floor aren't automatically respected just because they have "RN" behind their name, just as LPN's arn't automatically disrespected because they have "LPN" behind their name.
We have a great staff, although I'm sure it's not like this everywhere. There still will be RN's, doctors or the general public who think less of LPN's, but be the best nurse you can be and you will be respected.