I had a hard time and spent hours upon hours figuring out how to have two browsers with two different characters that could trade stuff. The way I finally got it to work was to download Firefox (free). I will use my new character on firefox (realize that with FF, usually it takes 2 or 3 tries to log in. The first time you will probably get a black window that says "done" at the bottom). If this happens, keep trying to log in and you should be able to get in after a couple tries. It helps to let firefox remember your username and password for the "mule" so you won't have to input it each login try. Then use internet explorer with your main character. Have your mule name their room "do not enter". When you have your main logged in on IE, search for the room called "do not enter". (I do this so my friends won't follow me while I'm trying to trade with my mules). Go into that room and you should have two windows open, one with your mule on Firefox, and one with your main on IE. Then do the trade. After the trade, log out both characters. The reason for this, is that if you just log out the mule on firefox and try to play with your main in IE, the text gets all weird and you can encounter other issues with the game as well. So just exit with both, and come back with only your main character.
I tried this with several browsers like Netscape and MSN explorer, and found that only firefox and IE could be used at the same time with two simultaneous windows. Hope it works for you!
Also, if this does not work, I am more than willing to facilitate a trade. You can look for my rooms and find me. I am usually on in the evenings until close, and start anywhere from 7pm to 11 at the latest. If you can't get the two browsers to work, make a mule, buy stuff, and then PM me with a good time to meet you.
I know you don't know me, but I am very honest and will not cheat you. My character and myself are fairly well known on the boards and I think others can vouch that I am honest and will not steal your stuff. My main goal in playing VMK is to create fun for other players and to help them out.
But I do hope the double browser thing works for you, because it makes it SO much easier, not having to rely on someone else. You can make mules and get stuff anytime you want without the hassle of having to find another person to help you. PM me with any questions if you want!

Mia
P.S. And don't forget, you can make as many "mules" as you want, and the email does not even have to be a valid one! So you can keep making new characters and getting them all the credit codes, and trading stuff you buy to your main character.
Here is a list of things to do with a "mule" to get the maximum credits to buy things:
1. Enter all codes on the sticky for credits
2. Sell all your clothes except what you are wearing, or just trade them to your main and your main can sell them to get their own credits.
3. Visit the NPC's for 40 credits each, and trade the pins to your main character too (some ppl collect those pins so you can give them away...Piratedragoon collects them I know)
4. Play Jungle Cruise (and just kill your boat right away, you still get 50 credits no matter how well you play)
5. Make and play a song in the Music Game. The song can just be one sound, dont' work too hard on it if you are in a hurry. You get 100 credits to make the song and 100 to play it.
6. If you want to get your main character credits so they can buy things like rooms, camera, film, and whatever other non-tradable items, buy a bunch of hong kong disney t shirts (100 credits each) and trade them to your main character. Your main can then sell the shirts for 50 bucks a pop (this is the item that has the
best buy/sell ratio as far as I know). It's a purple shirt in the clothing shopping section.