mailing list....please help

I posted in the PHP forum but was told this is a better place???
so here goes...

hello,
i know basically, nothing about PHP so have done amazing to get this far...i think.
i have been looking through some posts on here but it dosent make much sense to me. i copied some code and got it workng, but not how i would like it to.
I am with unitedhosting.co.uk and have their bronze hosting package. With that packaging I get PHP list, and already i am confused.

the page can be visited at http://www.motivesounds.com/test2.htm

and this is the code from that page
////////////////////////

<script language="Javascript" type="text/javascript">
var fieldstocheck = new Array();
fieldnames = new Array();
function checkform() {
for (i=0;i<fieldstocheck.length;i++) {
if (eval("document.subscribeform.elements['"+fieldstocheck[i]+"'].value") == "") {
alert("Please enter your "+fieldnames[i]);
eval("document.subscribeform.elements['"+fieldstocheck[i]+"'].focus()");
return false;
}
}
return true;
}
function addFieldToCheck(value,name) {
fieldstocheck[fieldstocheck.length] = value;
fieldnames[fieldnames.length] = name;
}
</script>
<form method="post" action="http://www.motivesounds.com/phplist/lists/?p=subscribe" name="subscribeform">
<font size="2" face="Arial, Helvetica, sans-serif">Email:
<input type="text" name="email" value = "">
<br>
<br>
Name:</font>
<input type="text" name="attribute2" value = "">
<script language="Javascript" type="text/javascript">addFieldToCheck("attribute2","Name");</script>
<input type="hidden" name="list[1]" value="signup" />
<br>
<input type="submit" name="subscribe" value="Subscribe" onClick="return checkform();">
<script language="Javascript" type="text/javascript">addFieldToCheck("email","Email Address");</script>
</form>

///////////////////////



1))) what i want to do is get rid of the name field. i tried to delete the following line but it stopped working.

///////////////////////
<script language="Javascript" type="text/javascript">addFieldToCheck("attribute2","Name");</script>
//////////////////////


2))) i do not like the page it takes you to after you subscribe, is there anyway of once the user has clicked subscribe they are taken back to my main page; www.motivesounds.com

3))) is there any way that the user can just be put straight onto my mailinglist without having to wait for a mail with an activation link, then click that link, then get another mail welcoming them?
i am guessing there is a big risk that activation email might be sent to the junk email inbox and therefore i lose a potential customer to my record label.

4))) thank you so much in advance

cheers
mark
drunkenmind@hotmail.com