disguising IP address

Hi,
Does anybody know if a program exists that will represent your IP address as something other than it is, without anybody but yourself knowing it?
The reason I ask is that there are certain casino sites that give "free money" in the form of "no deposit required bonuses". However, I found out that many casinos are members of a group that all use a particular type of software, and share their records.
I don't feel that it's fair for individual casinos to adverstise "no deposit required free sign up bonus money", and then deny me the money because I have gotten it at another casino they are affiliated with.
I was told yesterday by an online rep at one site that "my IP had already been credited with the bonus money available" when I had actually never before downloaded, installed, and registered an account at the casino in question. It was explained to me that other casinos I had gone thru the process with had recorded my IP address, and that they therefore won't honor their promise to me of free money for downloading and installing their software.
So, in a nutshell, what I'm looking for is a program that will send out a "disguised" version of my IP address, without actually changing my IP so that they will not weasel out of their promises to me and the public.
Thank you to anybody who can help me with this minor battle.
Phlegmox

 

proxy server.

 

That wont disguise your WAN address?

 

It is probably illegal, especially since there is money involved. Did you read everything, they might have a clause in their fine print that allows them to limit these entries for "bonuses". Don't waste your time, the whole casino thing sounds like a scam, anyways.

 

So you have a static IP? You can bet they also placed a cookie as well, so a new IP probably won't help unless you clean out the cookie too

 

Hmmm in the UK at least these online casinos use a combination of identifiers to determine if people are trying to get the cash bonus multiple times. Your IP address is one of them though regardless of whether you are DHCP or static it is still going to be similar and I am sure they will have no problems determining your ISP. Failing that they use details such as name/address/bank details...
Besides which it seems the old cash bonus scheme is dying now - the casinos have all the signup numbers they are going to get, so they just up the amount you have to gamble to before you can withdraw to make it harder/nigh on impossible to actually get anything out of them...
in other words you aint really missing out.

Cheers,
Greg