In the File Steam/Friends/ChatRoomDlgFriend.res:
CEmoticonButton
{
bgcolor="ChatDarkBG"
image="graphics/icon_emoticon"
padding-left=4
render
{
// lines around
0="fill( x1 - 1, y0 + 1, x1, y1 - 1, LightBorder1 )"
1="fill( x0, y0, x1 - 2, y0 + 1, DarkBorder1 )"
2="fill( x0, y1 - 1, x1 - 1, y1, LightBorder1 )"
// single pixel fills in the corners
3="fill( x1 - 2, y0 + 1, x1 - 1, y0 + 2, MediumPxCnr )"
4="fill( x1 - 2, y1 - 2, x1 - 1, y1 - 1, ButtonBorderDisabled )"
}
}
CEmoticonButton:hover
{
image="graphics/icon_emoticon_hover"
}
CEmoticonButton:selected
{
image="graphics/icon_emoticon_hover"
}
EmoticonMenuItemStyle
{
font-size=20
padding-right=4
}
And a bit further down:
place { control="EmoticonButton" region=bottom height=38 align=right }
If you remove those, it should be gone. The problem is, that need to adjust the rest of the file for the removed lines. So it is really not a simple task of removing them. I had some success by testing it real quick, but I also got some weird glitches on the chat window.
Also, when Steam updates, it will be back, so it is better get into skin creation and make a skin that does not contain it.
The "restrictions" you're saying you've got on your account do not match up with what Steam call a "limited account" - it is probably worth contacting Steam support to discuss the issues you're having with the Steam store.
There are four methods of earning Snow Globe cards:
Vote in the "Community's Choice" sale every 8 hours, for every three times you vote you get one card (that's one free card per day)
Buying games/software from Steam: for every $10 you spend on Steam you get a Snow Globe card
Trading with other players on the Steam market
Crafting other badges will result in a Snow Globe card for each badge crafted
One thing to note is that getting Snow Globes by voting for the "Community's Choice" sale requires that you be level 5 already.
Best Answer
There is currently no feature to allow you to invite a friend to Steam as such. The closest thing I can think of is either to:
Gift them a game
If you have a game in your Steam inventory, you can gift that to an email address that is not already on Steam.
This will send them an email with an invite to Steam and all the instructions they will need.
Do it manually
CREATE MY ACCOUNT