Asp.net user login with disxussion foum

Thanks dear friend...

i just created sign up and sign in.....
i dont need complete solution.. an idea how it implemented and which control may be used as dono about comment passed through different login

<table bgcolor="ccccff" cellpadding="13">
<tr><td colspan="2"> <B>Sign in using R.M.D Account</B></td></tr>
<tr> <td class="style1"> <img src="d:\s5.jpg"><img src="d:\a1.jpg"></td>
<td class="style2">&nbsp;</td>
</tr>
<tr>
<td class="style1">Username</td>
<td class="style2"><Input type="text" name="t1"></td>
</tr>
<tr>
<td class="style1">Password</td>
<td class="style2"><Input type="text" name="t2"></td>
</tr>
<tr><td colspan="2"> <a href="d:/signin.html">Forget your password ?</a></td></tr>
<tr><td colspan="2"> Not an account just sign up &nbsp;<a href="d:/signin.html">Sign up</a></td></tr>
<tr><td class="style1"><Input type="submit" name="s1" value="Sign in"></td>
<td align="center" class="style2"><Input type="submit" name="s2" value="Cancel" ></td>
</tr>
</table>
<br>
<br>

</form>

</body>

<asp>