sending a url to another server

[ballhogjoni]

I am trying to access another persons server using their api. I cannot figure out how to send a url to their server. They say that by sending this url it will automatically set the user up with a trial account. Of course I am trying to send this in the background when the user fills out a form, it should input the values in the right spot. I have that part covered. I just need to send this url with the post method (I think) and over an ssl. Can someone help me out with this?

http://www.someurl.com/auto/api.php?partner_login=XXXXX&partner_password=XXXXX&test=TRUE&command=user.configure&user_id=NEW&service="code=XX,frequency=X,action=XXX,renewal_billed_to=XXX,trial=XXX"&output=php&phone=1234567891&first_name=foofirst&last_name=foolast&bill_address1=123 fooaddress&bill_address2=&bill_city=foocity&bill_state=FL&bill_postal=90210&bill_country=US&username=foousername&password=foopassword&cc_num=4111111111111111&cc_exp=2009-00&[email protected]