It can if the new medication is one that you can take while Paxil is still in your system. I personally didn't have any withdrawal symptoms when I went off Paxil, which I was forced to cold turkey because of a hospitalization.
Iowa

It seems that it isn't advisable to mix more than one SSRI at a time (Although Prozac for withdrawal minimization seems common from what I've read.) I think personally it's good to wait a period between SSRI. I like to know clearly what effects are comming from where. Then again, I've seen people that are on loads of meds that have potential interactions according to literature. I like to play it safe myself, If I was you I'd just try weaning alone at first, and if it works for you then there's no need to consider anything else. I'd personally stay away from benzodiazapines for an extended time because of potential addiction and withdrawals from those. They do help, but I just don't like the idea of gambling with addiction.

And thanks, your nickname has put the song "Telepopmusik - Breathe" in my head.

I have been on Paxil since 1998. It is the greatest thing on earth in my opinion.
It didnt seem to work at certain times and I thought I needed to switch meds.
My doc switched me from Paxil to Zoloft and I had no problems at all with withdrawals or side effects.
Just didnt help with the depression so I went back to Paxil.
I think that if you switch to another SSRI like Paxil you will do fine. Maybe Paxil effects the brain more than other meds in the same class so you might have some issues, but I really doubt you will have any big problems.
Be careful not to be switched to an SNRI like Cymbalta or Effexor. They are great meds, but effect the brain differently than Paxil so you may have problems stopping Paxil.
Try Zoloft, I heard it is a good med.