Use a variable as a URL in winhttp

[DaveFlonder]

what is the right way (if there is one) to load a url using a variable

usrselection := http://www.something.com

oHttp := ComObjCreate("WinHttp.WinHttpRequest.5.1")
oHttp.Open("GET", "WHATdoIPUTHERE?", false) ; I tried %usrselection% and "http://%usrselection%" and without quotes and so much more
oHttp.Send()

oHtml := ComObjCreate("htmlfile")
oHtml.Write(oHttp.responseText)

only part of code, i can get it to work if i type the url

can this be done