You don't need to take out any job to shorten it, however, you should reduce the verbage you have for all the jobs except the most recent two. You are looking for a systems/network administrator role and your last two positions are the ones that best apply to it. The others should be there to show your progression and account for those years of work. They do not need as much detail as you have there.
I also have some other questions:
1) You have managed over 50+ exchange servers but your company had 250 employees with 650 total end users. That seems rather excessive for those numbers.
2) What VMware did you work with? ESX? Did you use VMotion? Did you do the initial installations of VMWare or just environments on it? VMWare is hot right now so more detail would be helpful.
3) What versions of SQL did you work with? Microsoft 2000/2005, Oracle? A little more detail as to versions would be helpful. I would assume only MS SQL from your resume, but if you did 2005 I wouldn't know it from this.
In your career objective, state something more than what you have there. Tell them that you want to live in the Minneapolis area. I would look at your resume and see job hopper, but if you explain you want to move I might be more inclined to hire you.
Kill the skills section it is just rehashing what you have listed in your experience.