How to refresh LAN Settings in IE?

hello,
I'm writing an application to change the proxy settings in Internet Explorer.
How can I refresh the settings programmatically without having to close and reopen IE?

I tried Control - F5 but it didnt help.
I import wininet.dll to change INTERNET_OPTION_SETTINGS_CHANGED flag:
/** @dll.import("WININET") */
static native boolean InternetSetOption(
int hInternet,
int dwOption,
StringBuffer lpBuffer,
int lpdwBufferLength);
/** @dll.import("WININET") */
static native int InternetOpen(String u, int dwAccessType,
String lpszProxy, String lpszProxyBypass,
int dwFlags)
public static void main(String args[]) {
int INTERNET_OPTION_SETTINGS_CHANGED = 39;
int INTERNET_OPEN_TYPE_DIRECT = 1;
int INTERNET_FLAG_OFFLINE = 0x01000000;
int hi = InternetOpen("Proxy.java", INTERNET_OPEN_TYPE_DIRECT, null, null, INTERNET_FLAG_OFFLINE);
InternetSetOption(hi , INTERNET_OPTION_SETTINGS_CHANGED , null, 0);
And I get :"Exception in thread "main" java.lang.UnsatisfiedLinkError: InternetSetOption
at Proxy.InternetSetOption(Native Method)
at Proxy.main(Proxy.java:457)"
What am I doing wrong ??

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<methodAction id="findAllRezerwacja1"
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<Item Value="dataDo"/>
<Item Value="dataOd"/>
<Item Value="idRezerwacja"/>
<Item Value="liczbaUczestnikow"/>
<Item Value="prowadzacy"/>
<Item Value="uwagi"/>
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RequiresUpdateModel="true" Action="999">
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NDValue="${bindings.findAllRezerwacja2.currentRow.dataProvider}"
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